Chevrolet 30 Series 1967 Service Manual page 591

1 At cranking speed, throttle wide open—Maximum variation, 20 lbs. between cylinders.
2 At idle speed with vacuum advance line disconnected and plugged.
3 On Step Van vehicles, use number two cylinder and timing tab on bottom of cover.
PAPER ELEMENT—Service at 12,000 miles initially—Check every 6,000 miles thereafter, until replaced.
POLYURETHANE BAND-Service every 12,000 miles.
OIL BATH—Change oil at regular engine oil change intervals.
AIR CONDITIONED VEHICLES—Set engine idle to specifications with air conditioning turned on and hot idle
4
compensator held closed. Those indicated b y * Set engine idle to specifications with air conditioning turned " off" .
TUNE UP CHART
SPECIFICATIONS 11
CHEVROLET TRUCK SERVICE M ANUAL