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Maintenance schedule, Line installation – MTD YM26BC User Manual

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SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

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.

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.

Line Installation

This section covers both SplitLine™ and standard single
line installation.

Always use Genuine Factory Parts™ 0.095 in. (2.41 mm)
replacement line. Using line other than the specified may
make the engine overheat or fail.

WARNING: Never use metal-reinforced line,
wire, chain or rope. These can break off
and become dangerous projectiles.

There are two methods to replace the trimming line:

• Wind the inner reel with new line

• Install a prewound inner reel

Winding the Existing Inner Reel

1. Hold the outer spool with one hand and unscrew the

bump knob counterclockwise. See Figure 31. Inspect
the bolt inside the bump knob to make sure it moves
freely. Replace the bump knob if damaged.

Figure 31

FREQUENCY

MAINTENANCE REQUIRED

REFER TO

Before starting engine

Fill fuel tank with fresh fuel
Check oil

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Page 19

Every 10 hours

Clean and re-oil air filter

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First change at 10 hours
Every 25 hours thereafter
Every 25 hours

Change oil
Change oil
Clean spark arrestor

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10 hours on new engine
Every 25 hours
Every 25 hours

Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap

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2. Remove the inner reel from the outer spool. See

Figure 31.

3. Remove spring from the inner reel. See Figure 31.

4. Use a clean cloth to wipe the inner reel, spring, shaft,

and inner surface of the outer spool. See Figure 32.

5. Check the indexing teeth on the inner reel and outer

spool for wear. If necessary, remove burrs or replace
the reel and spool. See Figure 33.

Inner Reel

Spring

Outer Spool

Bump Knob

Bolt

Indexing Teeth

Figure 33

Figure 32