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17
MAINTENANCE AND REPAIR INSTRUCTIONS
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.
WARNING:
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.
FREQUENCY MAINTENANCE REQUIRED REFER TO
Before starting engine
Fill fuel tank with fresh fuel
Check oil
Page 12
Page 22
Every 10 hours Clean and re-oil air filter Page 23
First change at 10 hours
Every 25 hours thereafter
Every 25 hours
Change oil
Change oil
Clean spark arrestor
Page 23
Page 23
Page 27
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
Page 25
Page 25
Page 27
This section covers both SplitLine™ and standard single
line installation.
Always use original equipment manufacturer replacement
line. Use 0.095 in. (2.41 mm) line for the YM26BC, and
0.080 in. (2.03 mm) line for the YM26C0. Line other than
the specified may make the engine overheat or fail.
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. For the YM26BC, unscrew it clockwise
(Fig. 27). For the YM26C0, unscrew the Bump Knob
counterclockwise (Fig. 31).
Inspect the bolt inside the bump knob to make sure it
moves freely. Replace the bump knob if damaged.
Inner Reel
Spring
Outer Spool
Bump Knob
Bolt
Fig. 31
LINE INSTALLATION
Your trimmer is equipped with one of two cutting
attachments. The YM26C0 & YM26BC use a bump
head, while the YM26CS & YM26SS are equipped with a
SpeedSpool cutting head. Refer only to the section that
applies to the type of cutting attachment your unit is
equipped with.
BUMP HEAD (YM26C0 & YM26BC)
Never use metal-
reinforced line, wire,
chain or rope. These can break off and
become dangerous projectiles.
WARNING:
Bump
Knob™
Bolt
Inner
Reel
Spring
Outer Spool
2. Remove the inner reel from outer spool (Fig. 31 or 32).
YM26BC
YM26C0
Fig. 32