Toro 74216, Руководство оператора

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46
5. Using a socket and torque wrench, rotate the idler
adjusting nut until torque is 25–30 ft-lb. (34–41 N m).
Tighten two nuts.
2
1
3
4
M-4312
Figure 65
Top View
1. Deck Belt
2. Idler Arm
3. Idler nuts
4. Idler adjusting nut
6. Reinstall the PTO drive belt. Refer to Replacing the
PTO Drive Belt, page 46.
Replacing the PTO Drive Belt
Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks and cracks are
signs of a worn drive belt. Replace the PTO drive belt if
any of these conditions are evident.
1. Stop the engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove the clutch retaining strap from machine frame
and unplug clutch terminal from wire harness
(Fig. 66).
3. Remove PTO drive belt from rear idler arm and front
idler pulley assembly. Remove the PTO drive belt
(Fig. 66).
4. Place new drive belt over clutch, around rear idler
pulley, installed into rear idler arm assembly, installed
into front idler pulley assembly and onto top center
pulley (Fig. 66).
Important Check the amount of twist in belt between
pulleys. Make sure it is only what is specified in figure 66.
5. Install clutch retaining strap and plug clutch terminal
into main wire harness (Fig. 66).
1
4
m–4451
M-4373
3
2
5
7
6
6
Figure 66
1. Clutch
2. Clutch retaining strap
3. Clutch Terminal
4. PTO belt
5. Machine Frame
6. 1/4
″
Belt Twist
7. 1/8
″
Belt Twist
6. Check belt tension. The center bolt of spring loaded
idler must be between the two alignment holes in left
support plate (Fig 67).
Note: Check position of center bolt in Low Height of Cut.
The center bolt must be at or below the top alignment
hole.
Check position of center bolt in a High Height of Cut. The
center bolt must be at or above the lower adjustment hole
(Fig. 67).
1
2
M-4417
Figure 67
1. Center bolt, spring loaded
idler 2. Alignment hole
7. If adjustment is required, loosen the fixed idler on
right support plate and move up or down in adjustment
slot (Fig. 68). To relieve belt tension lift up on spring
loaded idler.