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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.
FREQUENCY
Before starting engine
Every 10 hours
First change at 10 hours
Every 25 hours thereafter
Every 25 hours
10 hours on new engine
Every 25 hours
Every 25 hours
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)
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.
WARNING:
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. For the YM26BC, unscrew it clockwise
(Fig. 31). For the YM26C0, unscrew the Bump Knob
counterclockwise (Fig. 32).
Inspect the bolt inside the bump knob to make sure it
moves freely. Replace the bump knob if damaged.
MAINTENANCE REQUIRED
Fill fuel tank with fresh fuel
Check oil
Clean and re-oil air filter
Change oil
Change oil
Clean spark arrestor
Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap
Never use metal-
reinforced line, wire,
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:
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.
YM26BC
Outer Spool
Spring
Inner Reel
Bump Knob
YM26C0
Bolt
Bump
Knob™
2. Remove the inner reel from outer spool (Fig. 31 or 32).
To prevent serious
injury, never perform
REFER TO
Page 12
Page 22
Page 23
Page 23
Page 23
Page 27
Page 25
Page 25
Page 27
Bolt
Fig. 31
Outer Spool
Inner
Reel
Fig. 32
Spring
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