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4

PREPARING TO OPERATE YOUR RIO 51

SPARK PLUG

The recommended spark plug is a NGK CMR6A (FJIG7475). 
To avoid possible engine damage, do not use any other 
type of spark plugs. The plug gap should be .025" to .030”. 
If the plug gap is incorrect, adjust it with a spark plug 
gapping tool. This spark plug uses a 5/8” [16mm] spark 
plug wrench to remove and install the plug.

GASOLINE

Your Fuji-Imvac BT-28M engine requires a 32:1 gasoline 
to 2-cycle oil mix ratio for best engine performance and 
sustained engine life.

Follow the mixing direction on the oil container. Always 
use high-quality oil intended for 2-cycle engines. Prepare 
only the amount of gasoline oil mix needed. Aged gasoline 
could damage the engine and cause it to overheat. We 
fi nd that gasoline mix over 3 months should be discarded
and replaced.

Use only low octane, alcohol-free gasoline. The carburetor 
diaphragm will gradually deteriorate if you use gasoline with 
alcohol. You will need to replace the diaphragm after about 
80 hours of operation if you use gasoline with alcohol.

Gasoline can go bad. Store your gasoline out of the 
sunlight and in a cool place. Bad gasoline is one of the 
most diffi cult problems to diagnose in engines. If you have 
tried everything you can think of to remedy an engine that 
is not running correctly, try using some fresh gas/oil mix.

BREAKING IN THE ENGINE

To ensure long life and good performance from your 
Fuji-Imvac BT-28M Marine engine, you MUST break it in 
properly. To break-in your BT-28M Marine, you need to 
run the boat for about an hour with a rich needle setting. 
Patience is important here; the boat will run slowly during 
the break-in process and the engine’s output power will 
increase gradually over the fi rst few tanks. 

Note: 

Please do 

not use a hanging I-V bag style water cooling system for 
breaking in your engine. It is best to get the boat on the 
water running to break in your engine.

Do not run at full power (full throttle) for extended periods 
of time while breaking in your engine. It’s best to break in 
the engine using a variety of throttle settings.

Make sure that the engine has adequate cooling. With the 
boat in motion, look at the port side of the boat for water 
spraying out the cooling exit.  It’s a good idea to get in the 
habit of looking for water exiting the cooling exit each and 
every lap.

THE FOLLOWING TOOLS ARE REQUIRED (NOT INCLUDED) 
TO ASSEMBLE AND INSTALL THE BATTERIES IN YOUR RIO 51

  5.5mm Nut Driver (HCAR1112)

  7mm Nut Driver (HCAR1116)

  3mm Hex Driver (HCAR1156)

  #2 Phillips Screwdriver (HCAR1024)

  #2 Slotted Screwdriver (HCAR1002)

 10mm Wrench

NECESSARY COMPONENTS FOR OPERATING YOUR RIO 51

   Small personal retrieval system. This might be as simple 

as a tennis ball tied to the end of a fi shing reel, or a  
fully equipped AquaCraft Hammer EP RTR (AQUB10**) 
towing a tennis ball behind a 10 foot line. Better yet, 
use a small Jon boat and personal fl otation device (PFD, 
preferred!) so you can row out and properly retrieve 
your boat.

   Good friend or buddy to help you start and launch the 

boat. Besides, R/C boating is the most fun when you 
have a friend with you.

 12 “AA” batteries

   Approved one gallon gasoline fuel can (with standard 

pump gas)

 2-cycle oil

  Graduated mixing cups (GPMR8056)

 Small funnel

 GrimRacer

 50 weight cable oil (AQUB9550)

  GrimRacer Speed Grease drive cable lubricant (AQUB9500)

EXTRA SUPPLIES YOU MIGHT WANT TO HAVE WITH YOU 
DURING THE OPERATION OF YOUR RIO 51

As with any hobby, it is a good idea to assemble a useful 
collection of tools and accessories to bring along when 
you head out to the pond. Here are some items you will 
want to keep handy:

 Extra “AA” Batteries 

  RX Balloons (AQUB9504)

❏ 

Threadlocking Compound (GPMR6060)

 Pliers (HCAR0625)

  Hobby Knife (HCAR0109)

  Metric hex wrench set (HCAR0521)

  Stubby Metric hex wrench set 

  5/8 [16mm] inch spark plug wrench

OTHER USEFUL ITEMS TO HAVE ON HAND:

 Hobbico Duster

 compressed air (HCAR5500)

  Waders or rubber boots

 Paper Towels

 Spray-On Cleaner

 Sunglasses

 Sunblock

 Folding table 

 Lawn chairs

 First-Aid kit

  Cooler with plenty of ice and soda

  Canopy or shelter

4

Содержание Rio 51

Страница 1: ...o not recommend using a rubber blow up raft 5 The engine and exhaust system become very hot during operation Avoid coming in contact with any part of the motor cooling system or exhaust during or afte...

Страница 2: ...rolled by radio signals which are susceptible to possible interference from other R C transmitters paging systems or other electrical noise Before turning your radio transmitter and receiver on make s...

Страница 3: ...e and proof of purchase date please include a complete written explanation detailing the problem s Please include your name return address and daytime phone number so that you may be reached if needed...

Страница 4: ...power full throttle for extended periods of time while breaking in your engine It s best to break in the engine using a variety of throttle settings Make sure that the engine has adequate cooling Wit...

Страница 5: ...1 ON OFF Switch 2 Servo Reversing Switches 3 Power Light LED 4 Dual Rate Adjustment Knob 5 Steering Trim Knob 6 Throttle Trim Knob 7 Throttle Trigger 8 Steering Wheel INSTALLING THE TX BATTERIES 1 Sli...

Страница 6: ...e batteries are low and need to be replaced INSTALLING THE RX BATTERIES 1 Locate the cowl locks at the rear of the hatch Turn the lock 1 4 turn to remove the hatch 2 Using a standard screwdriver remov...

Страница 7: ...the antenna in to the point it is even with the back side of the cover 6 Place four 4 new AA batteries into the receiver battery holder Be sure to follow the polarity diagram molded into the battery h...

Страница 8: ...screwdriver carefully pry the retainer over the tabs INSTALLING THE RUDDER BLADE 1 Remove the 3mm and 4mm nuts and bolts from the rudder pivot bracket 2 Insert the rudder into the rudder control arm a...

Страница 9: ...ove the steering wheel to the right The back rudder should move to the right If this is not the case simply move the steering servo reverse switch located on the front of the transmitter 2 to the othe...

Страница 10: ...osition Note You might have to readjust the position of the throttle arm of the throttle servo to properly get the carburetor to match the pictures INSTALLING THE PROPELLER 1 Use a 10mm wrench to remo...

Страница 11: ...or left Adjust the steering trim knob 5 on your transmitter until the boat runs in a straight line when the steering wheel is at neutral When finished running push back on the throttle trigger to stop...

Страница 12: ...n Your B LSN is adjusted is too rich Close it 1 8th of a turn and try again Problem Engine stops at full throttle Engine sags when accelerated rapidly Engine sags with the boat at full speed Solution...

Страница 13: ...inner strut assembly with shaft out of the boat Wipe away any oil and grease Re grease the shaft using GrimRacer Speed Grease Re install the shaft and inner strut housing making sure the two 4mm screw...

Страница 14: ...ng on the type of handling you are looking to achieve Neutral PropellerThrust This setting provides thrust without letting it affect the ride attitude of the hull the bow s tendency to ride up or down...

Страница 15: ...osing the front bouncing up and down Bending them up will make for a looser faster ride but at the same time make the boat unstable It is best to make small adjustments one at a time You can use a lar...

Страница 16: ...a corner are especially dangerous Cutting across a wake when entering a corner can cause the boat to hook spin out Racing other boats through a corner may be a competitor s greatest challenge especia...

Страница 17: ...nation to make the races more interesting Usually smaller courses will provide more action and excitement The length of the races can be determined by a set number of laps around the buoys for example...

Страница 18: ...Up Bracket AQUB9270 Tank Bungee Cord AQUB9275 Transom Hardwood Mounting Plates AQUB9523 Rear View Mirrors AQUB9524 1 4 Drive Dog AQUB9525 Water Cooled Manifold 26 to 28cc AQUB9526 Turn Fin Transom Lar...

Страница 19: ...r the Fuji Imvac BT 28M use the order numbers in the Replacement Parts Lists that follow Replacement parts are available only as listed Replacement parts are not available from Product Support but can...

Страница 20: ...Washer 5mm 2 FJIG8605 9 Carburetor Set WT822 FJIG3286 10 Funnel Complete FJIG7640 RECOIL STARTER PARTS LIST Key Description Stock 0 Recoil Starter Assembly FJIG7149 2 Starter Handle FJIG7143 3 Rope Gu...

Страница 21: ...Purge Cover FJIG3020 10 Diaphragm Cover FJIG4520 11 Priming Body FJIG6210 12 Valve Spring FJIG8525 13 Needle Valve FJIG6240 15 Valve Hinge FJIG7540 16 Hinge Pin Set Screw FJIG5130 17 Hinge Pin FJIG510...

Страница 22: ...luded 2 channel radio are factory installed And AquaCraft adds many premier accessories from their GrimRacer line a machined aluminum surface drive strut assembly adjustable anodized FE rudder stainle...

Страница 23: ...he factory installed strut assembly it can be angled slightly or moved up and down The aluminum turn fin and deep water rudder are strong and lightweight and a water pick up in the rudder channels coo...

Страница 24: ...visit our web site at www aquacraftmodels com or call www aquacraftmodels com or call 1 800 682 8948 and mention code 99K36 1 800 682 8948 and mention code 99K36 www aquacraftmodels com www aquacraft...

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