22
MAINTENANCE SECTION
17. For Push to Start Models, insert the Pilot Push
Spring Washer (22) and the Pilot Push Spring (23) into
the bit Holder.
Throttle Lever Start Models do not use a Push Spring
and Washer.
18. Apply grease to the holes of the Bit Holder and insert
the two Pilot Cam Balls (18 or 20).
19. Apply grease to the inner diameter and the tapered end
of the Taper Ring Assembly (16 or 18). Insert grease
between the ball bearing thrust washer and the Taper
Ring Assembly, which are attached. Install the Taper
Ring Assembly onto the Bit Holder.
20. Install the Bit Holder Assembly onto the Cam Guide in
the Gear Case.
21. The Taper Ring Retaining Ring (15 or 17) has a round
edge side and a sharp edge side. Install the Taper Ring
Retaining Ring, sharp edge side first, into the groove
on the Bit Holder.
There are four grooves on the Bit Holder. The
fourth groove from the bit end is for Push to Start
Models. The third is for Throttle Lever Start
Models.
22. For Throttle Lever Start Models, place the Shims
(13 and 14), onto the Bit Holder.
23. Place the Clutch Spring (14 or 16) and the Clutch
Spring Plate (13 or 15) over the Bit Holder.
24. Fit the two notches at the rear end of the Gear Case
Assembly into the Gear Case Jig part no.
EP1510N–J37. Screw the Clutch Housing (12)
partially into the Gear Case.
This is a left–hand thread.
At the middle of the Clutch Housing Threads, apply
Loctite Threadlocker 3 Bond 1406
* to about three
threads. Push down and rotate the Bit Holder until it
engages the Cam Guide. Hold in place. Screw the
Clutch Housing in completely.
25. Using an open end torque wrench on the flats of the
Clutch Housing, tighten the Clutch Housing to 28.5
Nm.
26. Apply grease to both ends of the Clutch Pilot Rod (38)
and insert it into the Gear Case.
27. For Throttle Lever Start Models, inspect the
clearance of the bit Holder Assembly. Touch the end
of the Clutch Pilot Rod and push on the Bit Holder
Assembly. If the Clutch Pilot Rod is moved by the Bit
Holder at this time, add additional Shims.
28. Install the Bit Retainer Retaining Ring (10), sharp edge
side first, into the second groove from the bit end of
the Bit holder.
29. Apply grease to the holes of the Bit Holder and insert
the two bit Retaining Balls (17 or 19) into the holes.
30. Apply grease to one end of each Clutch Adjusting Pin
(11) and insert the three Pins into the Clutch Housing.
31. Apply grease to the other end of each Clutch Adjusting
Pin and the threads of the Clutch Housing. Screw the
Clutch Adjusting Ring (4) onto the Housing.
32. Install the Bit Retainer Sleeve (9), the Bit Retainer
Spring (8) and the Bit Retainer Collar (7) onto the
Bit Holder.
33. Using a thin blade screwdriver, install the Front Bit
Retainer Retaining Ring (6).
34. Unclamp the Gear Case Jig from the vise and turn it
over to remove the Clutch and Gear Case Assembly.
Hold the Gear Case Shield to keep the Gears in place.
35. Lift the Motor slightly and slide the Gear Case onto the
Motor with the Ground Screw hole adjacent to the
ground wire.
36. Attach the ground wire to the Gear Case with the
Ground Screw (74) and Washer (75). Tighten to 4
KG–cm.
37. Turn the Gear Case until the notch in the Gear Case
matches the tab in the Housing.
38. Completely insert the ground wire into the groove in
the Housing.
Adjusting the Brake Timing
1.
Insert a .90 mm thick gauge or pin gauge between
thePilot Rod Adjusting Screw (55) head and the
Shut–off Switch. Push the Bit Holder. The shut–off
Switch should not click.
2.
Insert a 1.05 mm gauge and push the Bit Holder. The
Shut–off Switch should click.
3.
Adjust the Pilot Rod Adjusting Screw if necessary
using the two adjusting spanner wrenches.
4.
For Throttle Lever Start Models, there is no need to
push the Bit Holder. Slide the gauges between the
Pilot Rod Adjusting Screw and the Throttle Lever (76).
Assembly of the Tool
1.
For Push to Start Models, made sure the ground wire
is inserted in the groove in the housing.
2.
For Throttle Lever Start Models, make sure the
Ground Wire is between the Motor Assembly and the
Housing.
3.
Snap the Housing halves together.
4.
For Throttle Lever Start Models, insert the Throttle
Lever Pin (78) into the Housing. Insert the
Throttle Spring (77) into the Throttle Lever.
While compressing the Throttle Spring, install the
Throttle Lever onto the throttle Lever Pin. Snap the
Housing halves together.
