PZ CARBURETOR
PERFORMANCE TUNING
AND MAINTENANCE
All information provided is intended for use as a guideline for basic
operation, tuning, and maintenance of the PZ slide valve carburetor
used on your Briggs & Stratton® race engine.
Contents
:
TUNING
1
Idle and Low Speed
2
Midrange/Part Throttle
3
High Speed/Full Throttle
3
TUNING TIPS
4
SET-UP
4
MAINTENANCE
5
SPECIFICATIONS & EXPLODED VIEWS
5
SAFETY
As with any carburetor or fuel system, care must be taken
to avoid fire from leaking or spilled fuel.
Be sure all gaskets
and seals are in good condition and properly assembled. Dispose
of any drained or spilled fuel. Check condition of fuel lines and
connections before every use. Fuel must be drained from the
system if vehicle or engine is not stored or transported in a level
position.
It is necessary to check the carburetor slide for free
movement through the full range of travel any time the
carburetor has been removed, installed, or adjusted and
before starting the engine.
Remove air filter and visually
confirm the slide valve is fully closed as the throttle is released.
Work the throttle control from closed to fully open and watch for
any sticking or hang-up. Engines could start with an open throttle
resulting in a runaway vehicle. Always install the correct return
spring for the carburetor and use an additional return spring on
the throttle pedal as needed.
Motorsports are dangerous and can lead to injury or death.
NO COMPROMISES
.
At the end of the day the effort you put into racing directly determines your outcome. You wouldn’t compromise
on your approach to racing, so why would you with your oil? What if there was an oil engineered specifically for
high-revving, air-cooled racing engines, methanol or gas fuels, that gives you the power of a lite oil yet the wear
protection of a heavy oil? What if that oil also had the added benefits of wear protection and a corrosion inhibitor
to safeguard your investment during, between, and after the season was over?
Briggs & Stratton 4T Racing Oil is available through any authorized
Briggs & Stratton Racing dealer. For additional information or to
locate a dealer near you please visit www.briggsracing.com.
Part Number: GBS2960
COMPROMISES lEAd TO WhAT-IF’S ANd AS RACERS
ThAT ISN’T PART OF OuR dNA. NO MORE COMPROMISES.
INTROduCING ThE BRIGGS & STRATTON 4T Full
SYNThETIC OIl CuSTOM ENGINEEREd BY AMSOIl
®
.
MAXIMuM hORSEPOWER
OuTSTANdING WEAR PROTECTION
EXCluSIVE SYNThETIC FORMulATION
EXhAuSTIVElY TESTEd ON ThE dYNO ANd ON ThE TRACK
dESIGNEd FOR hIGh REVVING, AIR-COOlEd RACING ENGINES
