Hydro neutral return linkage adjustment – John Deere 318 User Manual
Early models; Remove
left and right engine
side panels, battery and
Later models; Remove
Connect a scale to
Adjust friction disks by tightening or loosening
lock nut (A) until 31—44.5 N (7—10 lb force) is
required to move hydrostatic control lever.
NOTE: Top photo shows Version One—All
Models and Version Two—420.
NOTE: Bottom photo shows Version Two—316
and 318 and Versions Three and Four—All
Hydrostatic lever friction
must be adjusted
previous to this
adjustment: GO TO
Version One—316 and
Version Two—318 (Sliding
NOTE: For Versions One—318 and
420, (J-Bolt Style Linkage): GO TO
For later Versions of all
models (Detented Neutral Style
Linkage): GO TO
Early 316 has a different hydrostatic
control lever than shown.
Adjustment procedure is the same.
adjustment must be
made with pedestal
panels installed and
Remove belly screen
On 318; Lock both brake pedals
Apply and lock park brake.
Adjust cam plate (A) position by
loosening lock nuts (B and C) and
moving cam plate until neutral guide
(D) just enters neutral slot (E) in
cam plate. Be sure neutral guide
does not hit top of cam plate neutral
Tighten lock nuts.
Check position of hydrostatic control lever. Lever
must be in N/STOP notch of dash panel. If
necessary, loosen lock nut (C) and turn eccentric
nut (F) until lever is in N/STOP notch of dash
panel. Tighten lock nut.
Diagnosis, Tests and Adjustments/Neutral Return Linkage Adjustment (Early Models)
316, 318 & 420 Lawn and Garden Tractors