User Manual

Idle Stop Adjustment
The last setting to be made is the idle stop screw. Turning
this screw clockwise increases the idle speed; whereas
turning the screw counterclockwise will make the engine
idle at a lower speed. Ideally, the engine should idle just
fast enough to be reliable in acceleration and transition
from idle to full speed. Avoid an idle speed that is too
fast, as it will cause damage to your clutch.
Engine Maintenance
Periodic maintenance must be performed in order
to keep your engine in proper operating condition. After
each day of running, it’s critical to use high quality after-
run oil to protect the internals of the engine and protect
them against corrosion. The methanol used in the fuel
attracts moisture that can cause corrosion (particularly in
the ball bearings). We recommend Blue Thunder™ Final
Run (DYN2255) as it’s specifically formulated to protect
your engine between uses. Follow these steps after
running your engine:
1) Empty all fuel from the tank and fuel lines
2) Use Final Run fuel following the instructions on
the container
3) Clean and inspect the engine, air cleaner and
fuel system
Troubleshooting Guide
Problem
Engine won’t start
Engine starts, then dies
Engine starts and runs
for
1
⁄2 tank, then quits
Spare Part Listing
Stock # Description
DYN0900 CYLINDER HEAD SCREW (4):MACH 26
DYN0901 CYLINDER HEAD :MACH 26
DYN0902 HEAD BUTTON :MACH 26
DYN0903 HEAD GASKET .10mm: MACH 26
DYN0904 HEAD GASKET .20mm: MACH 26
DYN0905 PISTON/SLEEVE: MACH 26
DYN0906 WRIST PIN: MACH 26
DYN0907 WRIST PIN CLIPS(2): MACH 26
DYN0908 CONNECTING ROD: MACH 26
DYN0909 SLIDE VALVE CARB.: MACH 26
DYN0910 O-RING SET: MACH 26
DYN4911 CARB. RET. POST SET: MACH 26
DYN0912 COLLET: MACH 26
DYN0913 FRONT BEARING: MACH 26
DYN0914 CRANKCASE : MACH .26
DYN0915 REAR BEARING: MACH 26
DYN0916 SMALL FLYWHEEL: MACH 26
DYN0917 CRANKSHAFT (w/o PS) STD: MACH 26
DYN0918 CRANKSHAFT (w/ PS) STD: MACH 26
DYN0919 CRANKSHAFT (w/ PS) SG: MACH 26
DYN0920 CRANKSHAFT (w/o PS)SG: MACH 26
DYN0921 CRANKSHAFT TMX CONV.: MACH 26
DYN0922 BACKPLATE: MACH 26
DYN0923 THROTTLE BARREL: MACH 26
DYN0924 THROTTLE BARREL BOOT :MACH 26
DYN0925 BALL END: MACH 26
DYN0926 CARB. BALL LINK: MACH 26
DYN0927 LOW SPEED NEEDLE: MACH 26
DYN0928 IDLE SCREW: MACH 26
DYN0929 HIGH SPEED NEEDLE: MACH 26
DYN0930 HI SPEED NEEDLE HOLDER: MACH 26
DYN0931 HI SPEED NEEDLEWASHER:MACH 26
DYN0932 FUEL INLET NIPPLE:MACH 26
DYN0933 CARB. BODY: MACH 26
DYN0934 PS COMPLETE: MACH 26
DYN0935 PS HANDLE & EXT.: MACH 26
DYN0936 PS BACKPLATE: MACH 26
DYN0937 PS SCREW SET: MACH 26
DYN0938 PS RECOIL SPRING: MACH 26
DYN0939 PS ROPE/PULLEY: MACH 26
DYN0940 PS FRONT SET: MACH 26
DYN0941 PS ONE-WAY BEARING: MACH 26
DYN0942 BACKPLATE: MACH 26
DYN0943 PS SHAFT: MACH 26
Warranty
Mach 26 engines are guaranteed against original defects
in materials and workmanship for a period of 90 days
from date of purchase. Mach 26 engines are of excellent
quality and designed to provide many hours of racing
enjoyment. If cared for properly, these engines are
extremely durable. However, normal “common sense”
care must be given to your engine in order to maximize
its performance and service life. The following condi-
tions/problems cannot be covered under warranty:
• Recoil starter
•Damage due to lack of maintenance
• Rusted bearings
• Crash-related damage (over-revving, runaways,
free-wheeling, etc.)
• Damage due to use of improper fuel or glow plugs
• Damage due to lean runs (seized connecting rods,
pistons, etc.)
• Damage caused by dirt or foreign objects being
ingested into the engine
• Damaged from improper disassembly or reassembly
• Modification of any kind
• Normal engine wear
Should you need to send your engine in for warranty or
non-warranty repairs, please follow these steps:
1) Ship your engine (in its original box) packed
inside a sturdy box, freight prepaid to:
Horizon Service Center
ATT: MACH 26 Service
4105 Fieldstone Rd.
Champaign, IL 61822
2) Include a note containing a brief summary of the
problems you are experiencing with your MACH
.26 engine. Please tell us:
• Nitro content and brand of fuel used in
the engine
• Type of glow plug used
• Type of air cleaner used
• Approximate running time on the engine
prior to difficulties developing
Date your correspondence and include your return
shipping address, as well as a daytime telephone
number and e-mail address (if applicable).
3) Warranty Repair
If you believe that the problem(s) with your
engine are covered under warranty, you must
include your original dated sales receipt to verify
proof of purchase date. Providing the conditions
of warranty have been met, your engine will be
repaired without charge.
4) Non-Warranty Service
Should your repair costs exceed $50.00, you’ll be
provided with an estimate advising you of your
options. Any charges for return shipping of non-
warranty repairs will be billed to you.
5) Payment Method
Please advise the Horizon Service Center
of the method of payment you prefer to use.
The Service Center accepts Visa or Master Card.
When using credit cards, please include your
card number, expiration date and the name
as it appears on the card.
Possible Cause/Solution
• Reset needles to the
factory setting
• Incorrect needle settings
• Out of fuel/old, bad or
improper fuel
• Clogged fuel line
• Bad or improper glow plug
• Glow igniter not charged
• Engine flooded
• Pressure line blocked or
disconnected
• Bad glow plug
• High-speed needle too lean
• Hole or tear in fuel line
• Bad glow plug idle speed set
too low
• Overheated engine
(too lean)
• Improper needle settings
Mach 26 engines are manufactured in Taiwan and
distributed worldwide by
Horizon Hobby, Inc.
4105 Fieldstone Rd.
Champaign, IL 61822
www
.horizonhobby.com
4240
© 2003 Horizon Hobby, Inc.