13
BELT TENSION AND INSTALLATION
Gates Tension Testers are available
directly from Go-Devil or any local
Gates Dealer. (See page 14 for
Instructions)
Gates Tension Tester...How it works!
The tension tester is pushed against the center of the belt width through the inspection
hole. Pencil type tension testers like this one measures belt tension by showing the
force required to deflect the belt a predetermined distance. Force and deflection on
Surface Drive Engines should be kept within the tolerance listed below. Belts that are
run too loose will cause an increase in driveline vibration resulting in reduced belt life.
When tensioning, adjust to the high end of the given tolerance to allow for belt stretch.
Never tension belt more than specified
! Over-tensioning the belt may cause
premature wear or damage to the engine and drive unit bearings.
Standard 16” Transom Models
20” High Transom Models
Force = 11-15 lbs. Force = 9-13 lbs.
Deflection = 1/4” Deflection = 1/4”
TOOLS REQUIRED
Torque Wrench (to 250 Lbs.-In.)
3/8” Socket
9/16” Socket
6” long Socket Extension
Ratchet
9/16” Wrench
Gates Tension Tester
Gates Tension Tester
(Product No. 7401-0076)
- Up to 30 lbs. -
Deflection
FORCE
Scale
Deflection
DISTANCE
Scale
Sliding Rubber
“O” Ring