HALE FYR-PAK Installation and operating instructions

FSG–MNL–00225 REVISION A REFERENCE MANUAL P/N 029-9100-01-0
COPYRIGHT © 2021 BY HALE PRODUCTS, INC. ALL RIGHTS RESERVED
FYR-PAK CARBURETOR TUNING
MANUAL ADDENDUM
BY
HALE PRODUCTS, INC.
A Unit of IDEX Corporation
607 NW 27th Ave, Ocala, FL 34475
[phone]
[phone] (FAX)
www.haleproducts.com
-- NOTICE --
THIS GUIDE PROVIDES INSTRUCTION FOR AN ADJUSTMENT PROCEDURE.
DO NOT USE IT TO REPLACE THE OPERATION AND MAINTENANCE MANUAL, REQUIRED TRAINING,
STANDARD OPERATING GUIDELINES REQUIRED BY THE AUTHORITY HAVING JURISDICTION,
OR APPROPRIATE OPERATOR QUALIFICATIONS.

FOR MORE INFO, REFERENCE MANUAL P/N 029-9100-01-0 1
1. SAFETY
Firefighting is an inherently risky activity. Knowledge and training may manage that risk. This document is
not a training manual and does not provide all detailed system operation. This guide serves as a quick refer-
ence for Fyr-Pak engine starting and carburetor tuning. The AHJ (Authority Having Jurisdiction) shall provide
training and guidelines for system operation.
1.1 DANGERS, WARNINGS, CAUTIONS, and NOTICES
INDICATES A HAZARDOUS SITUATION, WHICH IF NOT AVOIDED WILL RESULT IN SERIOUS INJURY
OR DEATH.
INDICATES A HAZARDOUS SITUATION, WHICH IF NOT AVOIDED COULD RESULT IN SERIOUS INJURY
OR DEATH.
INDICATES A POTENTIALLY HAZARDOUS SITUATION, WHICH IF NOT AVOIDED MAY RESULT IN MI-
NOR OR MODERATE INJURY.
ADDRESSES PRACTICES NOT RELATED TO PERSONAL INJURY.
2. MATERIALS
2.1 Flat Head Screwdriver
Used for adjusting carburetor settings
2.2 Phillips Head Screwdriver
Used for removing air filter
2.3 Tachometer
Manufacturer: Hardline Products
Model: HR-8061-2
(or similar device)
3. TERMINOLOGY
3.1 Idle-Speed Adjustment Screw
Used for adjusting the closed (idle) position of the throttle lever; affects engine speed (rpm) at idle
3.2 Low-Speed Mixture Screw
Used for adjusting fuel consumption at low engine speeds; correct adjustment aids with cold engine starting
3.3 High-Speed Mixture Screw
Used for adjusting fuel consumption at high engine speeds; correct adjustment aids with maximum engine per-
formance
Figure 1: Tachometer

2 FOR MORE INFO, REFERENCE MANUAL P/N 029-9100-01-0
4. TUNING PROCEDURE
4.1 If air filter is fitted to unit, remove before continuing.
4.2 Attach tachometer by wrapping tachometer wire
around spark plug wire (see Figure 3).
4.3 Carefully close both the Low-Speed and High-Speed
Mixture Screws by turning clockwise. Do not use
force, only seat the screws gently.
4.4 Turn the High-Speed Mixture Screw counterclockwise
1 1/4 turns.
4.5 Turn the Low-Speed Mixture Screw counterclockwise
3/4 of a turn.
4.6 Turn the Idle-Speed Adjustment Screw counterclock-
wise until it just stops contacting the Throttle Stop
Lever.
4.7 Turn the Idle-Speed Adjustment Screw clockwise 1
turn so it slightly opens the Throttle Stop Lever.
Low-Speed
Mixture Screw
High-Speed
Mixture Screw
Idle-Speed
Adjustment
Screw
Choke Shutter
Figure 2: Carburetor parts labelling
(Shown with air
filter removed)
Throttle Stop Lever
(throttle lever handle
on opposite side)
Figure 3: Tachometer Mounting
TACHOMETER WIRE
SPARK PLUG WIRE

FOR MORE INFO, REFERENCE MANUAL P/N 029-9100-01-0 3
4.8 Open the fuel line shut off valve and prime the carburetor using the fuel line primer bulb (refer to
manual for location and operation).
4.9 Flip the Run/Stop switch to Run, close the Choke Shutter, open the Throttle Lever Handle to 1/4
throttle, and pull the starting cord. Repeat pulling cord until engine fires –adjust Choke Shutter as
necessary.
4.10 When engine fires, open Choke Shutter and idle the engine. Do not race the engine. (If the engine
dies, open Choke Shutter fully and start engine again.)
4.11 Prime the water pump.
4.12 Run engine for 3 minutes to warm engine.
4.13 Once engine is warmed up, ensure the Throttle Lever Handle is closed (idle).
4.14 Slowly adjust the Idle-Speed Adjustment Screw counterclockwise to allow the engine to run as low
RPM as possible without shutting off (ensure Idle-Speed Adjustment Screw maintains contact with
Throttle Stop Lever).
4.15 Slowly adjust the Low-Speed Mixture Screw (begin adjusting clockwise in 1/8 turn increments –if
engine does not speed up, change to counterclockwise adjustment) to achieve smooth engine per-
formance and maximum rpm at that idle speed setting.
4.16 Advance engine to full throttle.
4.17 Slowly adjust the High-Speed Mixture Screw (begin adjusting counterclockwise in 1/8 turn incre-
ments –if engine does not speed up, change to clockwise adjustment) to achieve smooth operation
and maximum RPM (at least 5400 rpm) under load (~70 gpm).
4.18 Test the throttle response by quickly going from idle to full throttle. If the engine bogs or hesitates,
begin slowly adjusting the Low-Speed Mixture Screw counterclockwise until the hesitation is elimi-
nated. Poor acceleration is a result of having the low-speed mixture set too lean.
4.19 Flip the Run/Stop switch to Stop.
4.20 If air filter was removed at the beginning of this process, re-attach air filter.