Havener Pistol-Grip Hydro Walk-Behind Mower 36, 48 & 52 - Manual (Page 20)

20
Figure 17
Figure 18
Safety System Adjustment (Refer to figure 18 & 19)
DANGER: DO NOT BYPASS, MODIFY, ALTER, OR DISCONNECT THE SAFETY
SYSTEM. MAKE SURE THAT THE SAFETY INTERLOCK SYSTEM IS FULLY
OPERATIONAL EACH TIME BEFORE MOWING, FAILURE TO DO SO COULD
PRESENT DANGER TO YOU AND OTHERS AROUND YOU.
1. Move the blade control lever to “OFF”.
2. Pull the blade rod from the idler arm by removing the hairpin cotter and
washer.
3. Loosen nut “D” and turn the blade rod 1 to 3 turns reinsert blade rod
back into idler arm and secure with the flat washer and hair pin cotter.
4. Check that safety switch “C” is firmly against blade bell crank, if not,
repeat steps 2 and 3 until safety switch “C” is firmly against blade bell
crank (see figure 18).
Figure 19
Neutral Adjustment
Note: Neutral has been set by your dealer at the time of set up and
normally does not need to be adjusted. If, however, you find that the
neutral has come out of adjustment, follow the procedure below.
1. Raise the drive wheels off the ground, support with jackstand and block
the caster wheels.
2. Make sure the speed control lever is in position, remove hair pin
cotter and the flat washer from swivel each side. Remove swivel from
traction idler arm (see figure 20).
3. Make sure the parking brake lever is “OFF”. Start the engine and note if the tires are rotating.
4. Loosen tracking adjustment nut “A” and “B” on the left side of the machine until the LH wheels starts to creep
forward. Make a note of the position of the adjustment nut “A”. (Figure 21).
Engine To Hydro Transmission Belt Adjustment: (Refer to
figure 17)
1. The engine to transmission belt, located underneath the rear deck,
should move 1/8” with 5 lbs. of pressure applied midway on the belt
between the transmission pulley and the engine output shaft pulley.
2. To adjust the belt, loosen nut “A” and turn nut “B” 2 to 3 turns and tighten
the nuts
3. Repeat steps 1-2 until the proper amount is achieved.
4. CAUTION: DO NOT OVER TIGHTEN. SEVERE PUMP DAMAGE WILL
OCCUR.