MAINTENANCE AND REPAIR INSTRUCTIONS
MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to any non-road engine repair establishment, individual or authorized service dealer.

NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any non-road engine repair establishment, individual or authorized service dealer.

WARNING: To prevent serious injury, never perform maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.

FREQUENCYMAINTENANCE REQUIREDSEE

 

 

 

Before starting engine

Fill fuel tank with fresh fuel

Page 4

Check oil

Page 7

 

 

 

 

Every 10 hours

Clean and re-oil air filter

Page 8

 

 

 

First change at 10 hours

Change oil

Page 7

Every 25 hours thereafter

Change oil

Page 7

Every 25 hours

Clean spark arrestor

Page 10

 

 

 

10 hours on new engine

Check rocker arm to valve

 

 

clearance and adjust

Page 9

Every 25 hours

Check rocker arm to valve

 

 

clearance and adjust

Page 9

Every 25 hours

Check spark plug

 

 

condition and gap

Page 10

 

 

 

INSTALL THE SHIELD ON A CURVED SHAFT (TB415CS Only)

1.Place the cutting attachment shield onto the shaft housing. Be sure the guard mounting bracket slides into the slot on the edge of the cutting shield. Rotate the shield into place, counterclockwise (Fig.

17). The holes in the guard mounting bracket and cutting attachment shield will line up.

Shaft HousingGuardMountingBracket

Cutting Attachment

Shield

Fig. 17

Guard

MountingWasher

Bracket

Wing NutSquare Bolt

Fig. 18

2.From inside the cutting attachment shield, push the square bolt through the hole until the threaded end protrudes through the guard mounting bracket (Fig. 18).

3.Put the washer on the bolt, then screw the wing nut onto the bolt and tighten.

CHECKING THE OIL LEVEL

The importance of checking and maintaining the proper oil level in the crankcase cannot be overemphasized. Check oil before each use:

1.Stop the engine and allow oil to drain into the crankcase.

CAUTION: To prevent extensive engine wear and damage to the unit, always maintain the proper oil level in the crankcase. Never operate the unit with the oil level below the bottom of the dipstick.

2.Place the unit on a flat, level surface to get a proper oil level reading.

3.Keep dirt, grass clippings and other debris out of the engine. Clean the area around the oil fill plug/dipstick before removing it.

4.Remove the oil fill plug/dipstick and wipe off oil. Reinsert it all the way back in.

5.Remove the oil fill plug/dipstick and check the oil level. Oil should be up to the top of the dipstick (Fig. 19).

Oil Fill Plug/Dipstick

O-Ring

FullAdd 1.4-1.5 Oz.(41-44 ml)Top of Dipstick

Fig. 19

6.If the level is low, add a small amount of oil to the oil fill hole and recheck (Fig. 20). Repeat this procedure until the oil level reaches the top of the dipstick.

NOTE: Do not overfill the unit.

NOTE: Make sure the O-ring is in place on the oil fill plug/dipstick when checking and changing the oil (Fig. 20).

O-Ring

Oil Fill Plug/Dipstick

Oil Fill Hole

Fig. 20

CHANGING THE OIL

For a new engine, change the oil after the first 10 hours of operation. Change the oil while the engine is still warm. The oil will flow freely and carry away more impurities.

7