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5
Owner’s Manual
TPS-2501,TPS-2510.TPS-250PN,TPS-270PN
WARNING!
Never try to start engine without side case securely fastened.
NOTE!
When assembling brand new unit, take off and discard the cardboard (1) between gear case and side
case. (Fig. 1 -8A)
Installation of bar and chain
1. Remove chain bar clamp nut (2).
2. Remove the side case (1). (Fig. 1 -8)
3. Install, the chain bar (1) onto the bolt (2), then push it toward the sprocket (3) as far as it will go. Make
sure that the boss of chain tension adjusting bolt (4) fits into the hole of the bar (5). (Fig. 1-9)
NOTE!
Slightly move the bar back and forth and make sure the chain tension boss (4) fits into the hole (5) in the
bar properly.
4. Confirm the direction of saw chain (1) is correct as in the figure, and align the chain on the sprocket.
(Fig. 1 -10)
5. Guide the chain drive links into the bar groove all around the bar.
6. Install the side case (2) onto the guide bar clamp bolt. Then fix the clamp nut (3) temporarily. (Fig. 1
-10)
7. Raise the bar end, and tighten the chain (1) by turning the tension adjustment bolt (2) clockwise. To
check proper tension, lightly lift up the center of chain and there should be about 0.5-l.0mm clearance
between bar and edge of drive link (3). (Fig. 1-11, 12)
CAUTION!
PROPER TENSION IS EXTREMELY IMPORTANT! (Fig. 1-11, 12)
8. Raise the bar end and securely tighten the chain bar clamp nut with the box wrench. (Fig. 1 -11)
9. A new chain will stretch so adjust the chain after a few cuts and watch chain tension carefully for the first
half hour of cutting.
NOTE!
Check the chain tension frequently for optimum performance and durability.
CAUTION!
When the chain is excessively tightened the bar and chain will be damaged rapidly. Conversely, when the
chain is excessively loosened, it may get out of the groove in the bar.
Always wear gloves when touching the chain.
WARNING!
During operation, hold the unit firmly with both hands. A single hand operation may cause serious injury.
