Here you will find instructions on how to process an oil Change on your DuroMax Product

<h1 data-section-id="58i8s8" data-start="0" data-end="23" id="isPasted">How to Change the Oil</h1>Follow these steps to perform an oil change on your generator:<h2 data-section-id="6k1xiw" data-start="89" data-end="108" id="before-you-begin">Before You Begin</h2>Make sure the generator is turned off, has cooled down, and is placed on a level surface before starting.Caution: Worn out or dirty oil can prevent proper cooling and may cause serious engine damage.<hr data-start="328" data-end="331"><h2 data-section-id="xnpfkt" data-start="333" data-end="365" id="step-1-remove-the-drain-plug">Step 1: Remove the Drain Plug</h2>Using a 12 mm hex wrench, loosen and remove the oil drain plug.The drain plug is located on the crankcase, underneath the oil filler/dipstick cap.<hr data-start="532" data-end="535"><h2 data-section-id="akjun0" data-start="537" data-end="561" id="step-2-drain-the-oil">Step 2: Drain the Oil</h2>Allow all of the old oil to drain completely from the generator into an approved oil disposal container.Dispose of used oil properly according to local regulations. A local auto parts store may provide disposal guidance.<hr data-start="790" data-end="793"><h2 data-section-id="1nwikmn" data-start="795" data-end="830" id="step-3-reinstall-the-drain-plug">Step 3: Reinstall the Drain Plug</h2>Once the oil has fully drained, reinstall the oil drain plug.Tighten it securely using a 12 mm hex wrench.<hr data-start="949" data-end="952"><h2 data-section-id="1jk6l5h" data-start="954" data-end="984" id="step-4-refill-with-new-oil">Step 4: Refill with New Oil</h2>Remove the oil filler/dipstick cap and add the correct type and amount of new oil for your generator model.Fill carefully and avoid overfilling.<hr data-start="1137" data-end="1140"><h2 data-section-id="hvau1n" data-start="1142" data-end="1172" id="step-5-check-the-oil-level">Step 5: Check the Oil Level</h2>Use the dipstick to confirm the oil level is within the recommended range.Add more oil if needed.<hr data-start="1278" data-end="1281"><h2 data-section-id="1p3vd4g" data-start="1283" data-end="1324" id="step-6-secure-the-oil-cap-and-inspect">Step 6: Secure the Oil Cap and Inspect</h2>Reinstall the oil filler/dipstick cap securely.Start the generator briefly and check for any leaks around the drain plug.<hr data-start="1450" data-end="1453"><h2 data-section-id="9ghvog" data-start="1455" data-end="1473" id="important-notes">Important Notes</h2><ul data-start="1474" data-end="1696"><li data-section-id="198r7pd" data-start="1474" data-end="1543">Change the oil at the intervals recommended in your owner&#x2019;s manual.</li><li data-section-id="vsuywj" data-start="1544" data-end="1623">If the oil appears contaminated with water or dirt, drain it immediately.</li><li data-section-id="d6pil8" data-start="1624" data-end="1696">Always use the oil type recommended for your specific generator model.</li></ul>

Oil Change

Here we will explain how to change your spark plug

Spark Plug Maintenance GuideProper spark plug maintenance is important for reliable engine performance. A good spark plug should be clean, intact, and properly gapped to ensure efficient combustion.&#x26A0;&#xFE0F; Caution: Improper maintenance may cause reduced fuel efficiency, engine misfires, difficulty starting, or damage to the spark plug threads.<hr data-start="356" data-end="359"><h2 data-section-id="6o5ex0" data-start="361" data-end="397" id="step-1-remove-the-spark-plug-cap">Step 1: Remove the Spark Plug Cap</h2>Firmly pull the spark plug cap straight off the spark plug to disconnect it.<hr data-start="480" data-end="483"><h2 data-section-id="rf8t2t" data-start="485" data-end="517" id="step-2-remove-the-spark-plug">Step 2: Remove the Spark Plug</h2>Use the spark plug wrench included with the generator to loosen and remove the spark plug from the engine.<hr data-start="630" data-end="633"><h2 data-section-id="6gcrz8" data-start="635" data-end="668" id="step-3-inspect-the-spark-plug">Step 3: Inspect the Spark Plug</h2>Carefully inspect the spark plug for any signs of damage or excessive wear.Look for:<ul data-start="756" data-end="832"><li data-section-id="p2jnwg" data-start="756" data-end="790">Cracks or chips in the porcelain</li><li data-section-id="rg0i3f" data-start="791" data-end="814">Heavy carbon deposits</li><li data-section-id="jrcflm" data-start="815" data-end="832">Damaged threads</li></ul>If the spark plug is damaged, replace it with a new one. Recommended replacements include F6RTC or NGK BPR6ES spark plugs. However, please always refer to your owners manual to confirm which spark plug is needed for your unit.&#xA0;<hr data-start="966" data-end="969"><h2 data-section-id="t138b" data-start="971" data-end="1008" id="step-4-measure-the-spark-plug-gap">Step 4: Measure the Spark Plug Gap</h2>Use a spark plug gap gauge to measure the distance between the electrodes.The correct gap should be 0.7&#x2013;0.8 mm (0.028&#x2013;0.031 in.).<hr data-start="1150" data-end="1153"><h2 data-section-id="aqs1d0" data-start="1155" data-end="1190" id="step-5-clean-and-adjust-the-gap">Step 5: Clean and Adjust the Gap</h2>If reusing the spark plug, clean it with a wire brush to remove dirt or carbon buildup.After cleaning, adjust the gap if necessary to ensure it falls within the recommended range.<hr data-start="1378" data-end="1381"><h2 data-section-id="1yz650h" data-start="1383" data-end="1418" id="step-6-reinstall-the-spark-plug">Step 6: Reinstall the Spark Plug</h2>Thread the spark plug back into the engine by hand first to avoid cross-threading. Then tighten it securely using the spark plug wrench.<hr data-start="1561" data-end="1564"><h2 data-section-id="1lry12w" data-start="1566" data-end="1604" id="step-7-reattach-the-spark-plug-cap">Step 7: Reattach the Spark Plug Cap</h2>Push the spark plug cap firmly back onto the spark plug until it is securely connected.<hr data-start="1698" data-end="1701">&#x2705; Maintenance Tip: Regularly checking and maintaining the spark plug helps ensure smooth generator operation, easier starting, and improved fuel efficiency.

Spark Plug Maintenance

Here we will show you how to check and adjust your valves for your DuroMax product

<h1 data-section-id="2csofs" data-start="168" data-end="212" id="isPasted">Generator Valve Clearance Adjustment Guide</h1>The intake and exhaust valve clearance should be inspected and adjusted if necessary every 300 hours of operation or once every 12 months, whichever occurs first.Maintaining proper valve clearance ensures the engine runs efficiently and helps prevent premature engine wear.&#x26A0; Caution: Incorrect valve clearance can cause:<ul data-start="554" data-end="657"><li data-section-id="p27kt3" data-start="554" data-end="571">Hard starting</li><li data-section-id="6mcjru" data-start="572" data-end="602">Reduced engine performance</li><li data-section-id="tt6455" data-start="603" data-end="629">Excessive engine noise</li><li data-section-id="1xw5w9p" data-start="630" data-end="657">Potential engine damage</li></ul><hr data-start="659" data-end="662"><h1 data-section-id="12elmxc" data-start="664" data-end="696" id="valve-clearance-specifications">Valve Clearance Specifications</h1><div tabindex="-1"><table data-start="698" data-end="879"><thead data-start="698" data-end="724"><tr data-start="698" data-end="724"><th data-start="698" data-end="711" data-col-size="sm">Valve Type</th><th data-start="711" data-end="724" data-col-size="sm">Clearance</th></tr></thead><tbody data-start="755" data-end="879"><tr data-start="755" data-end="816"><td data-start="755" data-end="770" data-col-size="sm">Intake Valve</td><td data-col-size="sm" data-start="770" data-end="816">0.005 in &#xB1; 0.001 in (0.125 &#xB1; 0.025 mm)</td></tr><tr data-start="817" data-end="879"><td data-start="817" data-end="833" data-col-size="sm">Exhaust Valve</td><td data-col-size="sm" data-start="833" data-end="879">0.007 in &#xB1; 0.001 in (0.175 &#xB1; 0.025 mm)</td></tr></tbody></table></div><hr data-start="881" data-end="884"><h1 data-section-id="1r5jf9g" data-start="886" data-end="902" id="tools-required">Tools Required</h1><ul data-start="904" data-end="990"><li data-section-id="161bmgg" data-start="904" data-end="926">8 mm socket wrench</li><li data-section-id="r1ei9k" data-start="927" data-end="948">Spark plug wrench</li><li data-section-id="q53rb8" data-start="949" data-end="965">Feeler gauge</li><li data-section-id="jwr9n5" data-start="966" data-end="990">Flathead screwdriver</li></ul><hr data-start="992" data-end="995"><h1 data-section-id="tblazu" data-start="997" data-end="1038" id="step-by-step-valve-clearance-adjustment">Step-by-Step Valve Clearance Adjustment</h1><h2 data-section-id="6o5ex0" data-start="1040" data-end="1076" id="step-1-remove-the-spark-plug-cap">Step 1: Remove the Spark Plug Cap</h2>Pull the spark plug cap straight off the spark plug to disconnect it from the ignition wire.<hr data-start="1175" data-end="1178"><h2 data-section-id="1l6uov9" data-start="1180" data-end="1213" id="step-2-remove-the-valve-cover">Step 2: Remove the Valve Cover</h2>Using an 8 mm socket wrench, remove the four valve cover bolts.Disconnect the breather hose, then remove the valve cover to expose the rocker arms and valves.<hr data-start="1388" data-end="1391"><h2 data-section-id="1qr1kwk" data-start="1393" data-end="1425" id="step-3-remove-the-spark-plug">Step 3: Remove the Spark Plug</h2>Use the spark plug wrench provided with the generator to remove the spark plug.Removing the spark plug allows the engine to rotate more easily when positioning the piston.<hr data-start="1605" data-end="1608"><h2 data-section-id="1ky6mu0" data-start="1610" data-end="1656" id="step-4-set-engine-to-top-dead-center-tdc">Step 4: Set Engine to Top Dead Center (TDC)</h2>Insert a screwdriver into the spark plug hole to monitor piston movement.Slowly pull the recoil starter rope until the piston reaches the&#xA0;highest position and both valves are closed. This position is called Top Dead Center (TDC) on the compression stroke.<hr data-start="1934" data-end="1937"><h2 data-section-id="1covi7u" data-start="1939" data-end="1978" id="step-5-check-intake-valve-clearance">Step 5: Check Intake Valve Clearance</h2>The intake valve is located on the right side of the cylinder head.<ol data-start="2052" data-end="2157"><li data-section-id="d3au6e" data-start="2052" data-end="2132">Insert a 0.005 in feeler gauge between the valve head and rocker arm.</li><li data-section-id="1c90j3f" data-start="2133" data-end="2157">Check the resistance.</li></ol>Adjustment guidelines:<ul data-start="2183" data-end="2304"><li data-section-id="1vd342g" data-start="2183" data-end="2248">If the gauge is too loose, tighten the rocker nut slightly.</li><li data-section-id="1abrhb2" data-start="2249" data-end="2304">If the gauge does not fit, loosen the rocker nut.</li></ul>The gauge should slide with light resistance.<hr data-start="2357" data-end="2360"><h2 data-section-id="1c8mjn" data-start="2362" data-end="2402" id="step-6-check-exhaust-valve-clearance">Step 6: Check Exhaust Valve Clearance</h2>The exhaust valve is located on the left side of the cylinder head.<ol data-start="2476" data-end="2595"><li data-section-id="shgzd0" data-start="2476" data-end="2556">Insert a 0.007 in feeler gauge between the valve head and rocker arm.</li><li data-section-id="1kmyb2u" data-start="2557" data-end="2595">Adjust the rocker nut if necessary.</li></ol>The feeler gauge should move with slight resistance but not bind.<hr data-start="2668" data-end="2671"><h2 data-section-id="1s7ej6t" data-start="2673" data-end="2708" id="step-7-reassemble-the-generator">Step 7: Reassemble the Generator</h2>Once both valves are properly adjusted:<ol data-start="2750" data-end="3018"><li data-section-id="1lr7y0p" data-start="2750" data-end="2855">Reinstall the spark plug Torque specification: 16.2 ft-lbs &#xB1; 1.5 ft-lbs (22 &#xB1; 2 N&#xB7;m)</li><li data-section-id="3abr1" data-start="2857" data-end="2962">Reinstall the valve cover Torque specification: 7.4 ft-lbs &#xB1; 1.5 ft-lbs (10 &#xB1; 2 N&#xB7;m)</li><li data-section-id="1jg6mfq" data-start="2964" data-end="3018">Reconnect the spark plug cap and ignition wire.</li></ol><hr data-start="3020" data-end="3023"><h1 data-section-id="1e493li" data-start="3025" data-end="3043" id="common-questions">Common Questions</h1><h3 data-section-id="1231jbp" data-start="3045" data-end="3094" id="how-often-should-valve-clearance-be-adjusted">How often should valve clearance be adjusted?</h3>Valve clearance should be checked every 300 hours of operation or every 12 months.<hr data-start="3183" data-end="3186"><h3 data-section-id="17xtvhy" data-start="3188" data-end="3237" id="what-happens-if-valve-clearance-is-incorrect">What happens if valve clearance is incorrect?</h3>Incorrect valve clearance can lead to:<ul data-start="3278" data-end="3396"><li data-section-id="1p0qd8" data-start="3278" data-end="3315">Engine tapping or knocking sounds</li><li data-section-id="16stekc" data-start="3316" data-end="3343">Poor engine performance</li><li data-section-id="p27kt3" data-start="3344" data-end="3361">Hard starting</li><li data-section-id="awpl8a" data-start="3362" data-end="3396">Potential internal engine damage</li></ul><hr data-start="3398" data-end="3401"><h3 data-section-id="1m61sfr" data-start="3403" data-end="3458" id="why-do-i-need-to-set-the-piston-to-top-dead-center">Why do I need to set the piston to Top Dead Center?</h3>Setting the piston to Top Dead Center (compression stroke) ensures both valves are fully closed so the clearance measurement is accurate.<hr data-start="3602" data-end="3605"><h1 data-section-id="wt7uz2" data-start="3607" data-end="3642" id="ai-search-triggers-internal-use">AI Search Triggers (Internal Use)</h1>This article should trigger for the following customer questions:<ul data-start="3711" data-end="4180"><li data-section-id="1vukbu4" data-start="3711" data-end="3751">generator valve clearance adjustment</li><li data-section-id="194ayxj" data-start="3752" data-end="3780">duromax valve adjustment</li><li data-section-id="1frdi6w" data-start="3781" data-end="3814">generator valve tapping noise</li><li data-section-id="g7bwrn" data-start="3815" data-end="3849">generator engine ticking sound</li><li data-section-id="xuofw6" data-start="3850" data-end="3884">how to adjust generator valves</li><li data-section-id="u7rrlr" data-start="3885" data-end="3921">intake valve clearance generator</li><li data-section-id="1fk8jyd" data-start="3922" data-end="3959">exhaust valve clearance generator</li><li data-section-id="26zft1" data-start="3960" data-end="3985">generator valve specs</li><li data-section-id="ywjfs8" data-start="3986" data-end="4021">generator rocker arm adjustment</li><li data-section-id="1snckbi" data-start="4022" data-end="4063">valve clearance maintenance generator</li><li data-section-id="m6z2dx" data-start="4064" data-end="4103">generator hard starting valve issue</li><li data-section-id="1mgt4r6" data-start="4104" data-end="4146">generator compression valve adjustment</li><li data-section-id="nrdzje" data-start="4147" data-end="4180">generator valve lash adjustment</li></ul><hr data-start="4182" data-end="4185">&#x2705; Support Tip: Customers reporting ticking noises, hard starting, or loss of power after many hours of use may need a valve clearance inspection.

Check and Adjust Valve Clearance Procedure

In this section, we will go over the process of cleaning your carburetor for your DuroMax product.

Carburetor Maintenance

DuroMax Help Center (AUTOMATION)

Suggested Maintenance

Unboxing/Setup

Generator Shipping Brace Removal

What Type of Cords can I use for a Portable Generator?

DuroMax Safety Guidlines

DuroMax Suggested Break-in Period / Suggested Tips

DuroMax Home Back Up Power Questions

What weight oil should be used in our generators?

Can a trickle/maintenance charger be used on the generator battery?

Generator Unboxing / Setup / Tips

Discontinued Generators

XP5500X - Specifications

XP7500X - Specifications

XP10000X - Specifications

XP12000X - Specifications

XP13000X - Specifications

X Series Specifications

XP4500DX - Specifications

XP5500DX - Specifications

XP7500DX - Specifications

XP10000DX - Specifications

XP12000DX - Specifications

XP13000DX - Specifications

DX  Series Specifications

XP4850HX - Specifications

XP5500HX - Specifications

XP10000HX - Specifications

XP12000HX - Specifications

XP13000HX - Specifications

XP15000HX - Specifications

HX Series Specifications

XP13000HXT - Specifications

XP15000HXT - Specifications

HXT Series Specification

XP15000HX+ Specifications

HX+ Series Specifications

XP15000HXT+ Specifications

HXT+ Series Specifications

DS13000MX  - Specifications

MX Series Specifications

DS13000MXT - Specifications

MXT Series Specifications

XP2300iH - Specifications

XP4500iH - Specifications

XP7000iH - Specifications

XP9000iH - Specifications

XP9500iH - Specifications

XP11000iH - Specifications

XP16000iH - Specifications

XP28000iH Specifications

iH Series Specifications

XP7000iHT Specifications

XP9500iHT Specifications

XP11000iHT - Specifications

XP16000iHT - Specifications

XP28000iHT Specifications

iHT Series Specifications

Generator Series by Power Size / fuel Sources

Generator Series By Power Size /Fuel Source(s)

Generator Specifications

Generator Start Up Procedures

Generator not starting on Gasoline

Generator not starting on Propane

Generator not starting on Natural Gas

Generator not producing Electricity

Electric Start Does Not Work

Generator Leaking Gasoline

Generator Run, but has a rough start / Idle

Generator Starts, but will not stay running

Need To Order Parts

DuroMax Claim Process

Troubleshooting

What does the term "Hybrid" or "Dual Fuel" mean?

What is the THD for our generators?

What is the difference between the EH and HX series?

Where are our generators made?

Do your electric start generators come with a battery?

Can you convert our dual fuel generators to natural gas?

How can I make my generator quieter?

Do your dual fuel generators include the propane regulator and propane hose?

What is the difference between DuroMax and DuroStar model variants?

What are the Natural Gas Fuel Pressure and BTU Requirements for Tri-Fuel Generators?

When should I change the oil on my DuroMax Engine in my Generator/Water Pump/Pressure Washer?

Can these generators be hooked directly to a transfer switch or interlock?

How long can my generator run continuously?

Can I vent my generator exhaust from an enclosed area?

How do I connect the generator to my home?

Can I hook my dual fuel generator up to my large home propane tank?

Do you sell an aftermarket remote start kit for your generators?

What will happen if the generator gets overloaded?

What is the input pressure requirement for our generators to operate on propane?

How should the generator be shut off after the power comes back on?

How should I store my generator if I'm planning on using it in the same day?

How should I store my generator if I'm planning on storing my generator for over 30 days?

Does the generator automatically recharge the 12V battery while running?

How frequent do I need to perform maintenance on my generator?

What Oil Filter Can I Use on the XP15000E or XP15000EH?

How do I start my generator in colder temperatures?

Can your generators be operated in the rain or snow?

Do your generators run on liquid or vapor propane?

What does the recharge indicator light mean?

What type of gasoline is recommended in our generators?

Does the generator need to be grounded with a grounding rod?

Can you use synthetic oil in our generators?

DuroMax XP9000iH Remote Start Issue

What is the difference between an Inverter Generator and Open Frame Generator ?

Central AC -Portable Generator Compatibility

DuroStar DS4000S Wheel Kit

Difference between Generator series

Aluminum vs Copper Windings

What is Carbon Monoxide (CO Sensor) used for?

Bypassing CO (Carbon Monoxide) Sensor

Generator Sales To California

DuroMax and ATS Transfer Switch Compatibility

Generators that are equipped with a Floating Neutral

Generators that are equipped with a Bonded Neutral

DuroMax Inverter Generators

Generator Winter Storage Instructions

DuroMax Generators Basic FAQ

What kind of battery do your electric start engines use?

Does the electric start engine charge the battery?

How do I disconnect the low oil sensor?

Does the engine shaft run clockwise or counter-clockwise?

Does the engine have a case iron cylinder sleeve?

How do I separate the key switch from the engine?

What type of oil cooling do your engines have?

What is the break in recommendation for our engines?

What weight oil should be used in our engines?

What type of gasoline is recommended in our engines?

DuroMax Engine Basic FAQ

What are our water pumps impellers made from?

Can you pump hot water with your water pump?

What weight oil should be used in our water pumps?

What are your water pump bodies made of?

What kind of fittings do your water pumps use?

How do I prime my water pump?

How much pressure do your water pumps have?

What size grit can pass through the water pump?

What type of gasoline can be used in your water pumps?

Can I use a smaller hose than the pump fitting size?

DuroMax Water Pump Basic FAQ

What type of nozzles are included with our pressure washers?

What type of soap can be used in our pressure washers?

Do our pressure washers include the spray wand?

What weight oil should be used in our pressure washers?

Can bleach be used in the pressure washer?

How do you prevent overheating on your pressure washer?

How frequent do our pressure washers require maintenance?

What type of gasoline can be used in your pressure washers?

What is the capacity of your pressure washers detergent tanks?

Can you use hot water in your pressure washer?

DuroMax Pressure Washers Basic FAQ

Copy of Receipt

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Will Call - Pick up

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Do you charge sales tax?

Delivery of Generator Information

What should I do if I cannot upload a receipt during DuroMax generator registration?

How can I confirm that my product is registered?

How can I verify my product registration if I don't see it under my email?

What should I do if I don’t receive a complete confirmation email?

What if the registration system says my unit is already registered, but I can't find the confirmation email?