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
LOSR6535 Complete Pull Starter: Mach 15RE
LOSR6536 PS Backplate: Mach 15RE
LOSR6537 PS One-way Bearing: Mach 15RE
LOSR6538 PS Shaft: Mach 15RE
LOSR6539 PS Cushion Spring Mach 15RE
LOSR6540 PS Screw Set: Mach 15RE
LOSR6541 PS Handle Set: Mach 15RE
LOSR6542 PS Recoil Spring: Mach 15RE
LOSR6543 PS Rope & Pulley: Mach 15RE
LOSR6548 Carb Retainer Post & Nut: Mach 15RE
LOSR6552 Throttle Barrel: Mach 15RE
LOSR6553 Throttle Barrel Boot: Mach 15RE
LOSR6554 Throtle Arm W/ Nut: Mach 15RE
LOSR6555 High Speed Needle Valve: Mach 15RE
LOSR6556 High Speed Needle Holder: Mach 15RE
LOSR6557 High Speed Assembly Washers: Mach 15RE
LOSR6558 Fuel Inlet Nipple: Mach 15RE
LOSR6559 Low Speed Needle Valve: Mach 15RE
LOSR6564 Rotary Carburetor: Mach 15RE
LOSR6565 Complete O-Ring Set: Mach 15RE
LOSR6580 Cylinder Head: Mach 15RE
LOSR6581 Combustion Head Button: Mach 15RE
LOSR6582 Head Shim .1mm: Mach 15RE
LOSR6583 Head Shim .2mm: Mach 15RE
LOSR6584 Piston/Sleeve: Mach 15RE
LOSR6585 Wrist Pin: Mach: 15RE
LOSR6586 Wrist Pin Clips: 15RE
LOSR6587 Connecting Rod: Mach 15RE
LOSR6588 Front Bearing: Mach 15RE
LOSR6589 Collet: Mach 15RE
LOSR6590 Crankcase: Mach 15RE
LOSR6591 Header Seal: Mach 15RE
LOSR6592 Rear Bearing: Mach 15RE
LOSR6593 P/S SG Crankshaft: Mach 15RE
LOSR6594 Idle Screw: Mach 15RE
LOSR6595 O Ring Set: Mach 15RE
Warranty
Mach 15 RE engines are guaranteed against original
defects in materials and workmanship for a period of
90 days from date of purchase. Mach 15 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
conditions/problems cannot be covered under warranty:
• Recoil starter
•Damage due to lack of maintenence
• 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
ATTN: MACH 15 RE Service
4105 Fieldstone Rd.
Champaign, IL 61822
2) Include a note containing a brief summary of the
problems you are experiencing with your MACH
.15 RE 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 15 engines are manufactured in Taiwan and
distributed worldwide by
Horizon Hobby, Inc.
4105 Fieldstone Rd.
Champaign, IL 61822
www.horizonhobby.com
7527
© 2005 Horizon Hobby, Inc.
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7527_DYN_mach15RE_man#88EE5.pdf 12/8/04 2:54:42 AM
7527_DYN_mach15RE_man#88EE5.pdf 12/8/04 2:54:42 AM
