Carburetor Service Guide; Recommended Tools; Carburetor Conforms To Exhaust Emissions Regulations - Zenoah CHTZ2401 Workshop Manual

7-1 Recommended Tools

We also supply the carburetor maintenance tools as shown below. Please purchase them if needed.
No. Tool Number (RedMax P/N)
① 3699-90211 (521 23 08-01)
② 3699-90537 (514 44 60-01)
7-2 Carburetor Conforms to Exhaust Emissions Regulations (USA, EU model only)
The carburetor flow rates of all Husqvarna Zenoah engine blowers are individually pre-adjusted to pass
exhaust emissions regulations.
A limiter cap is installed in the idling limiter to prevent an operator carelessly changing the idle setting resulting
in non-conformance with exhaust emission regulations.
Execute a correct adjustment according to page 21 "7-6 Carburetor Adjustment".
L-needle
ATTENTION!!! IMPORTANT!!!
Carburetor adjustments with caps removed must be conducted by Emission Certified Servicing
Dealers ONLY.
The dealer must supply the unit to the customer in original configuration, using the manufacturer's
carburetor adjustment procedure, which includes having the limiter caps in place before the unit is
put into service.
Knowingly removing or rendering inoperative any device, element, or design installed on or in a
non-road engine which is in compliance with E. P. A. or C. A. R. B. (USA), STAGEⅡ Ⅱ Ⅱ Ⅱ (EU) regulations
is classified as TAMPERING.
TAMPERING is a violation of FEDERAL LOW, resulting in significant civil penalties (fines) of up to
$25,000 for each violation.

7. Carburetor Service Guide

Pressure Gauge
Tachometer PET-1000
①
Throttle Valve
Limiter Cap
Description
②
A limiter cap closes the L-needle adjustment hole of
the throttle valve.
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