Havener Pistol-Grip Hydro Walk-Behind Mower 36, 48 & 52 - Manual (Page 19)

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Figure 15
Engine To Blade Belt Adjustment for 48” and 52” (Refer to Figure 15)
1. Remove the deck cover and move the blade control lever on the control console to the “ON” position.
2. With approximately 10 lbs. of pressure being applied on the engine to blade belt midway between the pulleys,
(refer to the appropriate figure for your mower) the belt should move approximately 1/2”.
3. If the belt moves more than 1/2”, move the blade control lever back to the “OFF” position.
4. Remove hair pin cotter “A” and the flat washer from swivel and pull the swivel from idler arm “C”.
5. Loosen nut and rotate. Turn buckle rod “B” clockwise or towards the rear of the idler pulley, approximately 2
to 3 turns. Then tighten the nut. Reinsert blade rod “D” back into idler arm “C” and secure with the
flat washer and hair pin cotter.
6. Repeat steps 1 and 2 to check for proper tension. If more tension is needed, repeat steps 3-5 until the proper
amount is achieved.
7. Replace deck cover.
48” and 52” Blade To Blade Belt Adjustment: (Refer to figure 16)
1. Remove the deck cover.
2. With approximately 10 lbs. of pressure being applied on the blade to blade belt, midway between the
pulleys, the belt should move approximately 1/2”.
3. If the belt moves more than 1/2”, loosen nut “F” and turn nut “E” clockwise approximately1-2 turns, then
tighten the nuts.
4. Recheck the tension on the blade to blade belt. If it is still loose repeat step 3. Important: Do not overtighten
the blade to blade belt. Over tension can cause premature wear on belts and blade spindles.
5. Replace deck cover
Figure 16