Throttle Linkage Adjustment; Gasoline Engines; Lpg Engines (Impco); Lpg Engines (Aisan) - Yale GDP16-20AF Maintenance Manual

600 YRM 496
Whenever the throttle linkage is disassembled, the
throttle cable must be adjusted after installation.

GASOLINE ENGINES

For the GP/GLP/GDP16-20AF/BF
GDP030-040AF/BF),
GLP/GDP16-20AF (GP/GLP/GDP030-040AF) units,
see Gasoline Fuel System 900 YRM 547 for the
correct adjustment procedure.
GDP2.0-3.0RF/TF (GP/GLP/GDP040-060RG/TG/ZG)
and GC/GLC040-065TF/RF units, see Gasoline Fuel
System 900 YRM 502 for the correct adjustment
procedure.

ENGINE DATA

Engine Type......................... In-line, Four Cylinders
Bore × Stroke FE ................. 86 mm (3.39 in.) × 86 mm
Bore × Stroke F2 ................. 86 mm (3.39 in.) × 94 mm
Displacement FE ................. 1998 cm
Displacement F2.................. 2184 cm
Firing Order ......................... 1 - 3 - 4 - 2
Compression Ratio .............. 8.6 : 1
Compression Pressure ........ 1131 kPa (164 psi) @
Engine Timing (No. 1 Cylinder):
– Gasoline .......................
– LPG, GP/GLP/GDP16-
20AF/BF (GP/GLP/
GDP030-040AF/BF),
GC/GLC030-040AF, and
GLP/GDP16-20AF (GP/
GLP/GDP030-040AF) .....
– LPG, GP/GLP/
GDP2.0-3.0RF/TF
(GP/GLP/GDP040-
060RG/TG/ZG) and
GC/GLC040-065TF/RF ...
Engine Speed, FE (IMPCO):

Throttle Linkage Adjustment

(GP/GLP/
GC/GLC030-040AF,
For the GP/GLP/

Engine Specifications

(3.39 in.)
(3.70 in.)
3 3
(121.9 in.
3 3
(133.2 in.
270 rpm
0 /TDC
8 BTDC
9 BTDC

LPG ENGINES (IMPCO)

For earlier units, see LPG Fuel System 900 YRM 523
for the correct adjustment procedure.

LPG ENGINES (AISAN)

and
For later units, see LPG Fuel System, Aisan
Open-Loop 900 YRM 925 or LPG Fuel System,
Aisan Closed-Loop 900 YRM 948 for the correct
adjustment procedure.
– Idle Speed ....................
– Governed Speed ..........
Engine Speed, FE and F2 (AISAN):
– Idle Speed ....................
– Governed Speed ..........
Stall Speed (New FE Engine):
– Gasoline .......................
)
– LPG ..............................
)
Stall Speed (FE Engine With 30 Hours or More):
– Gasoline .......................
– LPG ..............................
Stall Speed (New F2 Engine):
– Gasoline .......................
– LPG ..............................
Stall Speed (F2 Engine With 30 Hours or More):
– Gasoline .......................
– LPG ..............................
Oil Pressure @ 2400 rpm.... 226 to 362 kPa

THERMOSTAT

Starts to Open ..................... 82 ±1.5 C (180 ±3 F)
Fully Open ........................... 95 ±1.5 C (203 ±3 F)
Engine Specifications
725 ± 25 rpm
2650 ± 50 rpm
800 ±25 rpm
2750 ±50 rpm
1980 ±50 rpm
1930 ±50 rpm
2100 ±50 rpm
2050 ±50 rpm
2150 ±50 rpm
2100 ±50 rpm
2270 ±50 rpm
2220 ±50 rpm
(33 to 53 psi)
25