Troy-Bilt Small Frame Tillers
1
TUFFY TILLER
ABOUT THIS SECTION:
NOTE:
This section covers the Tuffy rear tine
tiller, model 21A-630B063 with Serial Number
1B212G80447. This section has been techni-
cally written to follow along with the Troy-Bilt
Factory School.
UNIT FEATURES:
• 3.75 Hp, 4-cycle engine
• Power forward
• 14” tilling width
• 10” tine diameter
• Adjustable tilling depth up to 6”
• 10” Agricultural Tires
1.
ENGINE:
1.1.
Identify the engine that is powering the tiller, and
refer to the Engine Owner’s Manual for more
information.
2.
FORWARD CLUTCH CABLE ADJUSTMENT:
2.1.
Remove the spark plug boot from the spark plug,
and ground it to the engine. See Figure 2.1.
Figure 2.1
Spark Plug Boot
Grounded
Spark
Plug
2.2.
Make certain the forward clutch bail is fully
released. See Figure 2.2.
2.3.
Measure the overall length of the coils on the for-
ward clutch spring with the forward clutch bail
fully released using a dial caliper. See Figure
2.3.
2.4.
Record the forward clutch spring measurement
_____.
Figure 2.2
Clutch Bail
Fully Released
Figure 2.3
Coil Length - Fully Released
Troy-Bilt Small Frame Tillers
