MK Diamond MK-20 Series User Manual
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Check water level weekly. Add distilled water if necessary. Check terminal cables and remove any de-
posits. Remove the battery for recharging and follow the instructions for recharging. Damage can result
to the battery and electrical system if the battery is charged or installed in reverse polarity. Make sure
that the negative terminal is connected to ground.
MK-20 SERIES MAINTENANCE
Belt Adjustment and Replacement
This machine is equipped with two heavy duty V-belts which are
tensioned properly at the factory. These must be re-tensioned after
the first half day of operation and periodically thereafter. Adjust to the
original tension as set at the factory, which is approximately 1/4 inch
of defection of the center of the belt halfway between the pulley on the
motor and the pulley on the blade shaft.
To adjust belt tension, first remove the belt guard. With the belt guard
removed, loosen motor mount bolts. Loosen the lock nut and adjust
set bolt on the motor tension adjuster until the required belt tension is
achieved.
Retighten the motor mounting bolts.
Battery
CAUTION
CAUTION
Observe all battery precautions as outlined in the Assembly Section of this manual.
(A)
(B)
The two most common causes of misalignment are shown in the drawings.
Gap between steel
straight edge and
sheave.
NOTE:
A. the engine drive shaft and the blade shaft are not parallel.
B. the pulleys are not located properly on the shafts.
DO NOT OVER TENSION
as damage to belts and bearings
may occur. Belts that are too loose may slip, resulting in short
life and loss of power to the blade shaft. If any belts are worn or
damaged, replace the complete set.
The motor mounting plate must be maintained parallel to the
frame. Make sure all lock nuts are tightened and retighten the
bracket bolts.
Never make adjustments to belts or pulleys while engine is running.
Remove and install battery as per instructions in Assembly Section of this manual. Be careful not to
contact metal while loosening positive terminal with tools.