Grasshopper 721D2 User Manual

17
and level cutting height.
nn
nn
n
Check that cooling fins on the transmission
are clean.
STARTING THE ENGINE
Never start the engine in confined
rooms. Exhaust gases contain carbon
monoxide, an odorless and deadly
poison.
Do not allow children to approach the
machine while the engine is running.
Do not operate the machine around
open flames, i.e., trash fires.
Do not operate the engine when an odor
of fuel is present or other explosive
conditions exist.
nn
nn
n Position yourself on the tractor seat.
nn
nn
n Place both steering levers in swing-out neu-
tral position.
nn
nn
n Place electric clutch switch in “OFF” (down)
position.
nn
nn
n Set the throttle at
1
/3 open.
nn
nn
n Insert the key into the ignition switch and turn
to “ON” (black dot on switch plate).
nn
nn
n Check to see that the oil lamp and battery
lamp are on.
nn
nn
n Turn the key switch counterclockwise to pre-
heat the glow plugs in the engine. This engine
is equipped with quick heat glow plugs and
the standard preheating time is from 5-10
seconds. Preheating is not required once the
engine is warmed up.
nn
nn
n Return the key to “START”. When engine
starts release key immediately.
nn
nn
n Check to see that the oil lamp and battery
lamp are off. If either lamp remains lit a prob-
lem exists in that system.
nn
nn
n Warm the engine up at medium speed for
several minutes.
Action
Left
Steering
Lever
Right
Steering
Lever
PTO
Switch
Parking
Brake
Proper
Result
Start Circuits
Kill Circuits (with engine running at 1/2 throttle)
Test Safety Interlock System Daily
Try starting engine
Try starting engine
Try starting engine
Try starting engine
Raise off seat
Raise off seat
Raise off seat
Raise off seat
Move left steering
lever in
Out
Out
Out
Out
Out
Out
Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
Engines Cranks
Engine will not crank
Engine will not crank
Engine will not crank
Engine does not stop
Engine Stops
Engine Stops
Engine Stops
Engine Stops
Engine Stops
Move right steering
lever in
40
PTO SHAFT & CLUTCH ASSEMBLY
ItemItem
ItemItem
Item
OrderOrder
OrderOrder
Order
DescriptionDescription
DescriptionDescription
Description
No.No.
No.No.
No.
No.No.
No.No.
No.
ItemItem
ItemItem
Item
OrderOrder
OrderOrder
Order
DescriptionDescription
DescriptionDescription
Description
No.No.
No.No.
No.
No.No.
No.No.
No.
05090
1 644725 Splined Power Shaft
2 122044 Pillowblock Bearing
3 398914 Sleeve Sect. Q.D. Drive Shaft
4 401019 Yoke Splined Quick Disconnect
5 121010 Cross & Bearing
6 401017 Yoke w/Sleeve
7 415650 Sheave
8 281588 Gib Key
9 824637 Clutch Stub Shaft
10 270075 Socket Hd
11 388769 Electric Clutch
12 388872 Field Assembly w/Brake
13 388862 Armature & Rotor Assembly
14 729287 PTO Shaft Shield
15 422088 Clutch Bracket Cover
16 902583 Spacer
17 883803 Retaining Washer
18 257412 Lock Washer
19 243337 Bolt
20 824499 Idler Arm (includes items 21 & 37)
21 881105 Bearing Pivot Shaft
22 243355 Bolt
23 415610 Idler Pulley
24 243805 Bolt
25 257452 Lock Washer
26 283820 Spring Extension w/Swivel
27 732539 Idler Spring Bracket
28 725118 Clutch Anti-Rotation Bracket
29 381914 Drive Belt (two required)
30 725286 Rear Sheave Guard
31 253043 Whiz Nut
32 257040 Flat Washer
33 422098 Vinyl Cap
34 263660 External Retainer
35 283525 Compression Spring
36 300014 Steel Ball
37 121756 Oilite Bearing
38 253203 Whiz Bolt
39 253192 Whiz Bolt
40 253035 Whiz Nut
41 422520 Nylon Bearing
42 822684 Clear Hose

Grasshopper 721D2 Specifications

General

Brand	Grasshopper
Model	721D2
Category	Lawn Mower
Language	English