Begin by making sure the cover is tightened securely … that is,
the cover retaining screws are tightened properly (very tight).
The “best practice” to secure the pinon cover and housing is to
use a torque limiting T-handle tool (Bettcher Part #183898) to
secure the housing quickly and properly.
Using a straight-blade screwdriver, slowly apply pressure to the
housing. If the housing moves easily without much pressure, the
cover is worn. It should be replaced, as it can no longer secure the
blade and housing and may become a safety issue in addition to
running rough.
If the blade housing does not move easily unless a lot of pressure is
applied, then the cover is still good and has useful life.
That's all there is to it! By using this simple test, you should
improve Trimmer performance and lower maintenance costs.
You may also view a video clip demonstrating these test procedures.
To view the video go to:
Torque Limiting T-Handle
4
Begin with a properly
tightened cover using the
Bettcher Torque Limiter
30 - 35 lb. in (3,4 - 4,0 N-m)
Apply gentle pressure, if the
housing moves, the cover is worn.
The cost of a T-handle torque limiter is
about the same as a new pinion cover, so it
makes sense to invest in this tool to ensure
all Trimmer parts are properly assembled for
maximum life and performance.
Additionally, many maintenance pros find
that using the T-handle torque limiter is
faster, easier and more precise than using a
straight blade screwdriver.
Torque Wrench Kit
#
Part 183900
Damage occurs when the housing is
pried without first loosening the
cover screw (red arrow).
Loosen
First
Loosen
First
!
www.bettcher.com/pinion-cover
4
Preventing Cover Damage
Torque Limiting Kit
4
Part #
Description
183900
183898
183899
183901
183902
Kit 183900
Torque Wrench
Socket ¼” 6 pt
Stecknuss 5/16” 6 pt
Extension ¼” x 3” long
Cover Wear Testing
Simple test to determine the time to replace.
TRIMMER SYSTEM
