DUROMAX XP20HPE Manual de usuario

This manual provides information regarding the

operation and maintenance of these products. We

have made every effort to ensure the accuracy of the

information in this manual. We reserve the right to

change this product at any time without prior notice.

5800 Ontario Mills Pkwy

Ontario, CA 91764 USA

www.duromaxpower.com

Call our Customer Care Team Toll Free 8-5pm PST Mon-Fri

844-DUROMAX

REV: XP20HPE_rev12152022

XP20HPE

SERVICE MANUAL

CONTENTS

1. Maintenance Schedule................................................................................................... 4

Break-In Period ............................................................................................................... 5

High Altitude Operation ................................................................................................. 5

Checking the Oil .............................................................................................................. 6

Changing the Oil.............................................................................................................. 7

Changing the Air Filter.................................................................................................... 8

Spark Plug Maintenance .............................................................................................. 10

Emptying the Gas Tank ................................................................................................ 12

Storing the Engine for Same Day Use ........................................................................ 14

Storing the Engine for Use Within 30 Days................................................................ 15

Storing the Engine for Longer Than 30 Days............................................................. 16

Maintenance and Care

3. Specications................................................................................................................. 23

Adjustment and Torque Value Specications ........................................................... 24

Engine Diagrams........................................................................................................... 25

Wiring Diagram ............................................................................................................. 27

Specications

Common Engine Parts.................................................................................................. 18

Common Engine Parts

Troubleshooting............................................................................................................ 28

Troubleshooting

Maintenance Log........................................................................................................... 29

Maintenance Log

MAINTENANCE AND CARE

Proper routine maintenance of your engine is essential for safe, economical, and trouble-free

operation. It will also help reduce air pollution.

Maintenance Schedule

Remember that this schedule is based on the assumption that your machine will be used for its

designed purpose. Sustained high-load, high-temperature operation, or use in unusually wet or

dusty conditions, will require more frequent service.

SERVICE

EVERY USE

1ST MO. OR

8 HRS.

(BREAK IN)

EVERY 3 MO. OR

50 HRS. OF

HEAVY USE

EVERY 6 MO.

OR 100 HRS. OF

NORMAL USE

EVERY 12 MO. OR

300 HRS.

EVERY 3 YRS. OR

500 HRS.

ENGINE OIL CHECK CHANGE CHANGE CHANGE

AIR CLEANER CHECK CHECK CHANGE CHANGE

SPARK PLUG CLEAN /

ADJUST

CLEAN /

ADJUST

SPARK

ARRESTOR

CHECK CLEAN

IDLE SPEED CHECK /

ADJUST

VALVE

CLEARANCE

CHECK /

ADJUST

FUEL TUBE CHECK CHECK /

REPLACE

FUEL TANK /

FILTER

CLEAN

COMBUSTION

CHAMBER

CLEAN

WARNING: Improper maintenance, or failure to correct a problem before operation, can

cause a malfunction in which you can be seriously injured or killed. Always follow the

inspection, maintenance recommendations, and schedules in this instruction manual.

●Make sure the engine is o before you begin any maintenance or repairs.

●Let the engine and exhaust system cool before touching.

●To reduce the possibility of re or explosion, be careful when working around

gasoline. Use only a nonammable solvent, not gasoline, to clean parts. Keep

cigarettes, sparks, and ames away from all fuel-related parts.

Break-In Period

As the best practice for any new combustion motor it’s recommended to perform the break

in procedure as follows:

●Run the engine for the rst 6-8 hours on conventional oil, then change the oil. After

the break-in period synthetic oil may be used.

●During the break in period of the rst 6-8 hours keep the engine speed under 50% for

optimal results.

●Check and clean the air lter if necessary after the break-in period.

High Altitude Operation

At high altitudes, the standard carburetor air/fuel mixture will be too rich. The performance will decrease,

and fuel consumption will increase. A very rich mixture will also foul the spark plug and cause hard starting.

Operation at an altitude that diers from that at which this engine was certied, for extended periods of

time, may increase emissions. High altitude performance can be improved by specic modications to

the carburetor. If you always operate your engine at altitudes above 3,000 feet (900 meters), have a dealer

perform this carburetor modication. This engine, when operated at high altitude with the carburetor

modications for high altitude use, will meet each emission standard throughout its useful life. Even with

carburetor modication, engine horsepower will decrease by about 3.5% for each 1,000-foot (300-meter)

increase in altitude. The eect of altitude on horsepower will be greater than this if no carburetor

modication is made.

When the carburetor has been modied for high altitude operation, the air/fuel mixture will be too lean for

low altitude use. Operation at altitudes below 3,000 feet (900 meters) with a modied carburetor may cause

the engine to overheat and result in serious engine damage.

Note: Jet kits available for purchase upon request, please contact us at 844-DUROMAX to set up your

parts order.

MAINTENANCE AND CARE (CONTINUED)

Checking the Oil

Check the oil

The engine is equipped with an automatic shuto to protect

it from damage due to low oil. Nonetheless, you should check

the oil level of the engine before each use to ensure that the

engine crankcase has a sucient amount.

To check the oil level:

a. Make sure the engine is on a level surface.

b. Unscrew the oil ller/dipstick cap.

c. With a dry cloth, wipe the oil o of the stick on the

inside of the cap.

d. Insert the dipstick as if you were replacing the

cap and then remove it again. There should now be

oil on the stick. If there is no oil on the stick, or oil

only at the very end of the stick, you should add

oil until the engine crankcase is lled (see “Adding

Oil” portion of the “Maintenance” section).

e. The oil will be visible in the oil ll spout when full.

f. Be sure to replace the cap when nished checking

oil.

Model Number XP20HPE

Engine Oil Capacity 40.5 . oz (1.2 L)

Changing the Oil

Remove drain plug

Using a 12 mm hex wrench, unscrew the oil drain plug, which

is located on the crankcase underneath the oil ller/dipstick

cap.

Allow all the oil to drain from the engine.

Drain oil

Drain oil into an approved oil disposal container. Contact

your local auto parts store for information on oil disposal.

Replace drain plug

Replace the oil drain plug and tighten with a 12 mm hex

wrench.

CAUTION: Worn out or dirty oil does not cool the

engine properly and can lead to catastrophic

engine damage.

In addition to regular oil changes, it is necessary to drain the

oil from the crankcase if it has become contaminated with

water or dirt.

Routine maintenance of the air cleaner helps maintain proper

airow to the carburetor. Check that the air cleaner is free of

excessive dirt after every use.

CAUTION: Improper maintenance may cause

less air to enter the engine or dirty air to enter

the engine causing overheating and engine

wear.

MAINTENANCE AND CARE (CONTINUED)

Changing the Air Filter

Remove lter cover wing nut

Remove lter cover

Remove old lter element

Remove the top screw located on the top of the air lter cover.

Remove the plastic air lter cover by lifting the cover upwards

to expose the air lter element.

Remove the wing nut on top of the air lter element and slide

lter element o center bolt. This lter is paper and is not

reusable. Please call 1-844-DUROMAX to order a replacement

lter for your engine.

Replace new lter element

Slide new lter element over center bolt, and replace wing nut.

Tighten wing nut hand tight to keep lter in place.

Replace lter cover

Replace plastic air lter cover over the air lter base.

6. Secure lter cover

Fasten the air lter cover with the air lter cover wing nut and

tighten about hand tight.

MAINTENANCE AND CARE (CONTINUED)

The spark plug is important for proper engine operation.

A good spark plug should be intact, free of deposits, and

properly gapped.

Spark Plug Maintenance

Remove spark plug cap

Remove spark plug

Inspect spark plug

Pull on the spark plug cap to remove it.

Unscrew the spark plug from the engine using the spark plug

wrench included with this product.

Visually inspect the spark plug. If it is cracked or chipped,

discard and replace it with a new spark plug. We recommend

using an F6TC spark plug such as NGK BP6ES.

CAUTION: Improper maintenance may cause reduced fuel economy, misres,

trouble starting, or damage to the spark plug threads.

SPARK PLUG

CONSULT MANUAL

BEFORE REMOVING

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