Use and Care Guide

ManualsBrandsCat ManualsPortable Generators502-3700

MAINTENANCE

Ensure that all safety information, warnings, and

instructions are read and understood before any

maintenance procedures are performed.

Use service hours or calendar time, WHICH

EVER OCCURS FIRST, to determine the

correct maintenance intervals.

Stop the engine before servicing. Put the engine

in horizontal position and remove the spark plug

cap to prevent the engine from starting. Do not

operate the engine in an unventilated room or

other enclosed area.

When Required:

Fuel Tank Cap and Strainer – Clean

Every Use:

Engine Oil Level – Check

Walk-Around Inspection

First 20 Service Hours or 1 Month:

Engine Oil and Oil Filter– Change

Every Month:

Generator – Inspect

Every 50 Service Hours or 3 Months:

Air Filter – Check

Spark Arrester – Inspect/Clean/Replace

Every 100 Service Hours or 6 Months:

Engine Oil and Oil Filter – Change

Spark Plug – Inspect/Adjust/Replace

Every 300 Service Hours or 1 Year:

Cylinder Head – Clean

Engine Valve Lash – Check

Every 2 Years:

Fuel Line – Replace

Air Filter – Check

A dirty air filter will restrict air flow into the

carburetor, will cause poor fuel economy, and

may damage the engine. To keep the generator

in good operating condition, service the air filter

regularly. Service more frequently when

erating the generator in extremely dusty areas.

Note: Never operate the generator without the

air filter in place. Operating the generator without

the air filter in place will result in rapid engine

wear.

Remove the fan cover panel (5) by removing the

screws (6) and lifting out. Unscrew and remove

the air filter lock (1) and cover case (2).

Remove

the clip (3) and air filter (4). Make sure both the

paper and foam elements of the air filter (4) are

clean and not damaged. If the foam element is

dirty, wash it. If the paper element is dirty, knock

the dirt off. If either element is damaged, replace

the air filter.

Use a nonflammable solvent or a mixture of

usehold detergent and warm water to wash

the foam element. Rinse the filter thoroughly to

remove all of the cleaning solution. Never let the

foam element contact engine oil.

Note: Do not wring out the filter. Wringing out the

filter may damage the filter.

Use a damp rag to wipe dirt from the case and

ver. Install the filter into the housing. Place the

clip over the filter. Place the cover case over the

filter and clip. Reinstall the lock and screw in the

cover panel.