| The allen key method, slipping it between the idler pulley is for 2V motors.
The 4V are a little more involved. You need to measure the belt deflection between the two cam pulleys. It should be 5mm.
Tenion the belts "tight", turn the motor over a couple of times and then line the timing marks up. Scibe or pencil a line on the cover behind the belt, between the pulleys. Use this as the datum to measure the 5mm deflection.
Tension the horizontal cylinder only.
The rotate the motor 3/4 turn anti clockwise to put the vertical cylinder at TDC. Then tension that belt.
Only add tension to the belts turning the tensioner anti clockwise. |