Kohler KT17 - Air Cleaner and Cooling System Service

SECTION 1
GENERAL
INFORMATION
AIR
CLEANER SERVICE
KT engines have tear drop, square, or round air
cleaners with dry type filter elements. Elements
should be checked every 50 operating hours and
replaced when dirty. Check and replace more often
under extremely dirty, dusty conditions.
Replace
with a genuine Kohler element. Carefully
handle element -do not use if sealing surfaces are
damaged.
Some models are equipped with Precleaners, which
should be washed and oiled every 25 hours-see
Section 3 for details, and for proper disassembly
and reassembly procedures of air cleaners.
Air lnlake
Tube
Housing
COOLING SYSTEM SERVICE
Air is drawn into the cooling shrouds by fins on the
flywheel. The air intake screen and cooling fins on
the cylinder heads and barrels must be kept clean
and unobstructed at all times.
CAUTION:
Do not operate engine with blower
housing or cooling shrouds removed.
They direct air flow past cooling fins
and removal results in improper air
circulation, overheating and engine
damage.
External surfaces (see Figure 1-2), must be kept
clean, free of oil and dirt accumulation. Dirty
external surfaces result in poor cooling efficiency.
Figure 1-2. Keep These Areas Clean
SPECIFICATIONS AND TOLERANCES
GENERAL SPECIFICATIONS
KT17 KT19 KT21
Bore (Nominal).............. 3.125" (79.375 mm) 3.125" (79.375 mm) 3.312" (84.125 mm)
Stroke . . . . . . . . . . . . . . . . . . . . . 2.750" (69.8 mm) 3.063" (77.8 mm) 3.063" (77.8 mm)
Displacement ............... 42.18 cu. in. (691.4 cc) 47 cu. in. (770.4 cc) 52.76 cu. in. (864.7 cc)
Horsepower at 3600 RPM...... 17 (12.7 kW) 19 (14.2 kW) 21 (15.7 kW)
Weight . . . . . . . . . . . . . . . . . . . . .
1181b. (53.5 kg) 121 lb. (54.9 kg) 1241b. (56.2 kg)
Oil Capacity................. 3 pts. (1.42 L) 3 pts. (1.42 L) 3 pts. (1.42 L)
Spark Plug Gap.... . . . . . . . . . . .025" (0.635 mm) .025" (0.635 mm) .025" (0.635 mm)
Spark Plug Size.............. 14 mm 14 mm 14 mm
SparkPiugReach............ .460 (11.7mm) .460" (11.7mm) .460" (11.7mm)
Spark Plug Type ............ _ .............................. Champion RBL 15Y or Equivalent .............................. .
Breaker Point Gap............ .017/.023" (.432/.580 mm) .017/.023" (.432/.580 mm) .017/.023" (.432/.580 mm)
6