Corally C-00250 Series Setup guide

www.corally.com
C-00250>C-00257_manual-V2

2
INTRODUCTION
READ FIRST
Thank you for purchasing a Team Corally car. This manual describes the instructions for using the model and the elec-
tronic components. You will also nd some tips on how to maintain your RC model so that you can enjoy it for years to
come. You have purchased one of the most efcient models available on the market that has been designed by a team
of professionals. You will also benet from the best after-sales support. All Team Corally models guarantee a high quality
of manufacture and performance that guarantees you a high satisfaction of use and services provided by the Team
Corally. Always take the time to read the instructions carefully in order to follow all the procedures to use your RC model
safely for you and for other people and property in the area. This will allow you to take full advantage of all the perfor-
mance of your RC model.
Please also check the website www. corally.com/Downloads/ to check if you have the latest version of this instruction manu-
al. (Version: see bottom cover of this manual)
If you have any questions about the model and its components, you can send a message to info&corally.com
We also recommend that you get help from an experienced model maker or your dealer.
You will nd all the references of the spare parts on the website www.corally.com
TERM OF USE
The user is responsible for the use of your model. The user assumes all risks associated with the use of the model. This
model is not intended for use by children under 14 years of age without the supervision of a responsible adult who is
familiar with the dangers of using a RC model. Team Corally / JSP Group Intl bvba, its manufacturers, distributors and
resellers cannot control the use and load of the model and therefore cannot be held responsible for any damage to
property and damage caused to persons resulting from the use of this product. You must accept these conditions and
consider yourself fully responsible for the use of this product. If not, do not use this product.
Due to the continuous development of our products, the exact specications of the kit may vary. If you have a problem
with your new kit, please contact the store where you purchased it, indicating the part number(s).
Team Corally / JSP Group Intl bvba reserves the right to change any specication without notice. All rights reserved.
This owner’s manual is designed for use with your vehicle and contains the instructions you will need to operate and
maintain your vehicle.
- We know you want to start driving immediately after unpacking, but it is very important that you take the time to read
this manual carefully, even if you are an experienced R/C driver.
- Read carefully and follow all instructions in this manual. Failure to comply with the instructions will be considered as
abuse and/or negligence which may result in the cancellation of the warranty.
- Your vehicle is designed to operate on uneven terrain. However, dust, sand, water and carpet bres can get into your
car’s workspaces and can damage your vehicle if they are not removed quickly. We do not guarantee any warranty on
your vehicle against damage caused by external elements such as sand, dirt or water. Users are responsible for the
maintenance and safe operation of this vehicle.
- This product is not a toy. It is not suitable for users under 14 years of age, unless they are supervised by adults.
- Never attempt to disassemble electronic components. These have been carefully calibrated at the factory.
- Only improve your car with parts made for your car. If you upgrade performance, replace the entire system (such as
the motor, inverter, battery, etc.) so that all components are properly adapted. Any malfunction resulting from a custom
modication will void your warranty.
- Before driving your vehicle, please read this manual in its entirety and examine your vehicle and radio control system
for any defects.
- For better performance, some adjustments may be necessary.
- This vehicle requires a battery (included in the car or in the packaging). Make sure the vehicle’s battery is sufciently
charged before driving, otherwise you may lose control of the vehicle.
- The radio transmitter requires 4 AA batteries (not included)
- Always remove or disconnect the battery from the vehicle to the inverter when not in use.
- Please drive your car in a spacious place. Never drive your car on the street or in trafc. Public places are subject to
specic legislation by country, city, municipality, please comply with the legislation for the use of RC models in your
region.
- This product is fully assembled in the factory. We accept no liability for damage and/or accidents resulting from custom
modications and/or malfunctions.

3
USE PRECAUTIONS
SAFETY PRECAUTIONS
Failure to operate your model in a safe and responsible manner may result in injury to yourself, others or damage to
property around you.
• Do not use your model on public roads or in areas where you may encounter pedestrians or
riders.
• Do not operate in a congested area or in crowds.
• Do not operate in areas where loud noises can disturb others, such as hospitals and residential
areas.
• Do not operate your model with obstructed line of sight, at night or near water.
• Your model is radio controlled, it is subject to possible radio interference. Radio interference
can cause loss of control of your model. Be careful.
• Take care not to injure yourself while using tools to adjust or upgrade your model.
• Since the model contains small parts, keep out of reach of children while assembling and/or
disassembling your model.
• If your model becomes stuck against an object, release the throttle and retrieve it by hand
• Do not continue to apply the throttle when your model is stuck. This may damage the motor
and/or ESC/Receiver unit.
• Turn OFF your model and don’t use it if it runs erratically. Please do not use your model again
until the problem has been solved.
• Keep the wheels of the model off the ground when checking the operation of the radio equipment.
• When learning to operate your model, go to an area that has no obstacles that can damage your model.
• Before and after each use, check all the screws on the model.
• To maintain the best performance, check that all moving parts move freely.
Take all necessary precautions before, during and after using your model. You are responsible for the safe as-
sembly, maintenance and use of your model.
In case of any questions, contact your local reseller or contact Team Corally support for assistance.
For your safety, always use wear gloves and goggles when assembling and maintaining your model.
Always take all necessary precautions when handling products (silicone oil, grease, thread lock, cyanolyte glue, fuel) for
the operation of the model. (Refer to the manufacturer’s instructions)
For your safety, to keep the warranty and obtain the best performance, always use original CORALLY genuine parts.
Contains: LEAD (CAS 7439-92-1) ANTIMONY (CAS 7440-36-0)
WARNING: This product contains a chemical known to the state of California to cause cancer and birth defects or other
reproductive harm.
CAUTION: CANCER HAZARD
Contains lead, a listed carcinogen. Lead is harmful if ingested. Wash thoroughly after using.
DO NOT use product while eating, drinking or smoking.
Checks on the website if you have the latest version of the manual, see the version on the cover (-V1)
https://corally.com/Downloads/

4
If material defects or manufacturing faults should arise in a product distributed or manufactured by Team Corally / JSP
Group Intl bvba, and purchased by a consumer, we Team Corally / JSP Group Intl bvba acknowledge the obligation to
correct those faults or defects within the limitations described below. This manufacturers warranty is in addition to, and
does not affect, the legal or contractual rights of the consumer which arise from the purchase of such products. Team
Corally / JSP Group Intl bvba guarantees the consumer that its products are free from material, manufacturing, and
construction faults, as determined by the general state of knowledge and technology valid at the time of manufacturing.
The fault responsible for causing the damage must be proven to have been present in the product at this time. Claims
for compensation arising from consequential damage or product liability will not be considered valid unless they fall
under peremptory provisions of the law. If material defects or manufacturing faults should arise in a product distributed
or manufactured by Team Corally / JSP Group Intl bvba in the European community (EC) and purchased by a consumer,
then Team Corally / JSP Group Intl bvba undertakes to correct those defects within the limitations described below. This
manufacturer’s declaration does not affect the consumer’s legal or contractual rights regarding defects arising from the
purchase contract between the consumer and the dealer or reseller. Extend of the Warranty
If a claim is made under warranty, we take at our discretion to repair or replace the defective goods. We will not consider
supplementary claims, especially for reimbursement of costs relating to the defect (e;g. installation / removal costs) and
compensation for consequent damages unless they are allowed by statute. This does not affect claims on legal regula-
tions, especially according to the product liability law.
Provisions of the Warranty
The purchaser is required to make the warranty claim in writing, and must enclose original proof of purchase (e.g.
invoice, receipt, delivery note) and the appropriate warranty card. He must send the defective goods to our local rep-
resentatives or directly to Team Corally / JSP Group Intl bvba, Geelseweg 80, 2250 Olen, Belgium at his own risk and
cost.
The purchaser should state the material defect or manufacturing fault, or symptoms of the fault, as accurate as possible,
so that we can check if our warranty obligation is applicable. The goods are transported from the consumer to us, and
from us to the consumer, entirely at the risk and cost of the consumer.
Invalidation of the Warranty
The consumer cannot make a claim under warranty when the fault is affecting the use of the product arising from natural
wear, competition use, or improper use (including installation) or external forces. The consumer’s adherence to the
building and operating instructions relevant to the model, including the installation, operation, use of, and maintenance
of, model-related components cannot be supervised by Team Corally / JSP Group Intl bvba. Therefore Team Corally /
JSP Group Intl bvba is in no way liable for loss, damage, or costs resulting from improper use, or behaviour in any way
connected to the above described provisions. Unless otherwise required by law, Team Corally / JSP Group Intl bvba is
in no way whatever liable to provide compensation for damages arising from the improper use of the model (including
personal injury, death, damage to buildings, loss of turnover, loss of business, or interruption of business, or any other
direct, or indirectly caused, consequential damage).
Duration of Validity
The claim period is 24 months from the date of purchase of the product by the consumer from a dealer in the European
Community (EC) counted from the date of purchase. The claim period is 12 months from the date of purchase of the
product by the consumer from a dealer outside the European Community (EC) counted from the date of purchase. If
a defect arises after the end of the claim period, or if evidence or documents required according to this declaration in
order to make the claim valid are not presented until after this period, then the consumer forfeits any rights or claims
from this declaration. The guarantee period is not prolonged by the granting of any claims within the framework of this
warranty, especially in the case of repair or replacement. The guarantee period also does not restart in such cases.
Warranty Expiration
If we do not acknowledge the validity of a claim based on this declaration within the claim period, all claims based on
this declaration will expire after six months from the time of registering the claim; however this cannot occur prior to the
end of the claim period.
For any support, you can contact us by email at info@corally.com
WARRANTY

5
KIT CONTENT (Depends on the selected model)
REQUIRED FOR OPERATION (Not included)
Transmitter User Guide
4x AA Batteries
for the Transmitter
1.5mm
2.0mm
3.0mm
Hex Drivers
Cross Wrench
2S - 7.4V LiPo Battery
3S - 11.1V LiPo Battery
Silicone Oil
(for maintenance)
Charger
RTR Model (Chassis with Body)
LIPO BATTERY SAFETY PRECAUTIONS
• Follow and respect the manufacturer’s instructions for use
• It is important to check that your ESC is set to LIPO if you are using a LIPO battery. Failure to comply with this instruc-
tion will result in increased battery discharge and may cause re and damage to persons and property.
• When charging or storing LiPo batteries always use LiPo Safety Bag (Flame retardant).
• Always respect the maximum rate and voltage specied by the battery manufacturer.
• Charge the LIPO battery outdoors or in a ventilated area away from ammable objects and surfaces.
• NEVER leave your LiPo battery unattended while charging.
• If the battery swells during charging, stop charging immediately and disconnect the battery from the charger. Leave
the battery outside for a few hours and observe. Then recycle the battery according to the instructions of your country/
region. Never dispose of a LIPO battery with domestic waste.
• Before recycling your defective battery, it must be neutralized. Take a plastic container, ll it with water and add a lot of
salt until the water becomes opaque. Place the LIPO battery in the water and leave for 24 hours. Check with a voltme-
ter that the voltage is 0.0V. Then recycle the battery according to local regulations.
• Never charge a damaged or inated battery.
• Never discharge the battery cells below 3.2V.
• Always use the appropriate balancer/charger when charging your LiPo battery pack.
• When the battery is empty, check the temperature of the battery before charging it.
If the battery is very hot, wait until it cools before charging it.
• Never charge a very hot battery as this may cause an explosion or re.
• When the battery is empty, recharge it immediately. Do not store an empty battery, the battery will continue to dis-
charge, it will fall below the minimum voltage and become unusable.

6
CAR COMPONENTS
Steering Servo
Speed Controller (ESC)
Brushless Motor
Spur Gear & Slipper
Battery compartment
Receiver Box
Steering Knuckle
Steering Link
C-Hub
Front Suspension Arm
Rear Suspension Arm
Rear Upright
Wheel Hub
Wheel Hex Adapter
Rear Shock Absorber
Power Switch

7
QUICK START GUIDE
1.5V - AA BATTERY
INSTALL 4x AA BATTERY
TURN ON THE TRANSMITTER (Always First)
READ THE INSTRUCTIONS
MAKE SURE THAT ALL SCREWS AND NUTS ARE
TIGHTENED PROPERLY.
CHARGE THE BATTERY
INSTALL THE BATTERY
WHEN FINISHING
CHECK THE FUNCTIONS CHECK THE RADIO SYSTEM RANGE
Move away from the max. distance you will drive the vehicle.
Check that the vehicle responds properly to the controls.
If not, reduce the distance or change the driving location.
DRIVE SLOWLY TO BEGIN
1.5V - AA BATTERY
1.5V - AA BATTERY
1.5V - AA BATTERY
CHARGER
BATTERY
BATTERY
BATTERY
ON
OFF
ON
OFF
CONNECT THE BATTERY TO THE ESC
SWITCH ON THE ESC
CLEAN AND MAINTAIN YOUR VEHICLE
CHARGER
BATTERY

8
MAINTENANCE
SLIPPER CLUTCH ADJUSTMENT
SLIPPER PAD REPLACEMENT
SPUR AND PINION MESH ADJUSTMENT
Remove the cover
Loosen the motor screws.
Remove the cover
It may be necessary to replace the slipper pad every 25 runs.
It depends on how you drive and the type of terrain you drive on. If after consecutive adjustments you have motor problems, it is necessary to change the PADS.
If the gear mesh is not correct, you wear out the spur gear prematurely, the transmission will make noise, give unnecessary load on the motor (higher consump-
tion, heating of the transmission).
Tighten or loosen the nut to have 3mm of visible
shaft.
Cut a 5mm wide strip of paper and run it between
the pinion and the spur gear.
Re-tighten the motor screws and then remove the
strip of paper.
Loosen the Nylstop nut. Replace the slipper pad #C-00250-088
3mm

9
MAINTENANCE
SHOCK ABSORBER MAINTENANCE
DIFFERENTIAL MAINTENANCE
Remove the gearbox from the chassis.
Open the gearbox to extract the differential.
Remove the shock absorbers from the vehicle. (4x) Remove the shock cap. Drain the oil from the shock absorber.
It may be necessary to replace the silicone oil every 50 runs.
It depends on how you drive and the type of terrain you drive on.
It may be necessary to replace the silicone oil in the shock absorbers every 40 runs.
It depends on how you drive and the type of terrain you drive on.
Open the differential. Remove the silicone oil.
Refill with new silicone (5000cps) oil but not fully,
(90% capacity max.)
• Pull the Shock shaft
down.
• Fill the shock body with
silicone oil (1000cps).
• Move the piston
up&down
(3-4x) to release the air
bubbles in the silicone
oil.
• Pull the Shock shaft
down.
• Install the shock absorb-
er vertically and let it sit
for a few minutes until
the bubbles rise to the
surface.
• Install the silicone mem-
brane in the shock cap.
• Tighten slightly the
shock cap on the shock
body.
• A little oil will flow out of
the shock absorber.
• Gently move the piston
in upper position.
• The excess will flow out
of the shock absorber.
• Allow the piston in the
upper position.
• Tighten the cap fully but
not too much otherwise
the membrane will be
deformed.
https://corally.com/Chemicals/Silicone-Oils/
https://corally.com/Chemicals/Silicone-Oils/

1
1
1
1
1
1
10
EXPLODED VIEW

1
1
1
1
2
2
2
11
EXPLODED VIEW
C-3611-2-05-10-04
Ball Bearing - Abec 3
5x10x4mm - 2 pcs
C-3611-4-10-15-04
Ball Bearing - Abec 3
10x15x4mm - 2 pcs

12
SPARE PARTS
C-00250-001
Chassis - 2WD - Long Wheel-
base - Composite
C-00250-016
Bumper - Monster Truck 2WD -
Front - Composite
C-00250-021
Skid Plate - FR/RE - 1 Set
C-00250-026
Shoulder Screws - Steel - 8 pcs
C-00250-035
Wheel Hex Adapter - Front -
Aluminum - 2 pcs
C-00250-049
Gearbox - L/R - Composite -
1 Set
C-00250-002
Chassis Covers - Composite
C-00250-007
Chassis Cover - Long Wheel-
base - Front - Composite
C-00250-012
ESC Bracket - Cora 40 -
Composite
C-00250-017
Bumper - Bull Bar Type -
Front - Composite - 1 Set
C-00250-022
Suspension Arm - FR/RE -
Composite - 1 Set
C-00250-036
Wheel Axle - Front - Steel -
2 pcs
C-00250-051
Ball End - ø5.8mm - Composite
- 4 pcs
C-00250-008
Chassis Servo Cover -
Composite
C-00250-013
ESC Bracket - Torox 60 -
Composite
C-00250-018
Body Mount Set - FR/RE - 1 Set
C-00250-023
Arm Pin Set - 1 Set
C-00250-028
Caster Block - Composite -
2 pcs
C-00250-037
Wheel Axle Pin - ø2x12 - Steel
- 4 Pcs
C-00250-052
Turnbuckle 80 mm - M3 - Steel
- 2 pcs
C-00250-004
Chassis - 2WD - Short Wheel-
base - Composite
C-00250-009
Servo Saver - Composite
C-00250-014
Front Bulkhead - Composite
C-00250-029
Steering Knuckle - L/R -
Composite - 1 Set
C-00250-040
Shock Absorber - Front - 2 pcs
C-00250-053
Shock Tower - Rear -
Composite
C-00250-005
Battery Brace Screw - 2 pcs
C-00250-010
Ball - 5.8mm - Steel - 4 pcs
C-00250-006
Battery Brace - 2S/3S -
Composite - 1 Set
C-00250-015
Shock Tower - Front -
Composite
C-00250-020
Bumper - Bull Bar Type - Rear -
Composite - 1 Set
C-00250-025
Camber Links - FR/RE -
Composite - 1 Set
C-00250-041
Shock Absorber - Rear - 2 pcs
C-00250-031
King Pin - 4 pcs
C-00250-058
Bulkhead - Rear - Composite

13
SPARE PARTS
C-00250-059
Motor Guard - Rear - Composite
C-00250-065
Idler Gear 19T - Metal
C-00250-071
Diff Gear - Metal - Diff Gear
Cover - Composite - 34T - 1 Set
C-00250-081
Wheelie Bar - Composite - 1 Set
C-00250-092-C
Tire and Rim Set - Chrome -
1 Pair
C-54010
Speed Controller - TOROX 60 -
Brushless - 2-3S
C-00255-200
Polycarbonate Body -
MAMMOTH XP - Printed - Cut
C-00250-060
Gear Cover - Composite
C-00250-066
Stub Axle Pin - for input shaft
- Steel
C-00250-073
Diff Outdrive Cup - Steel - 2 pcs
C-00250-087
Spur Gear 56T/32DP - Com-
posite
C-00250-092-B
Tire and Rim Set - Black -
1 Pair
C-54001
Speed Controller - CORA 40 -
Brushed - 2-3S
C-00256-200
Polycarbonate Body - MOXOO SP
- Printed - Cut
C-00250-061
Motor Mount Plate - Aluminium
C-00250-068
Hub - Rear - Composite - 2 Pcs
C-00250-074
Diff Gasket - 1 Set
C-00250-088
Slipper Pad - 2 pcs
C-00250-100
Electric Motor - 550 Type -
Brushed
C-00250-200
Polycarbonate Body - TRITON SP
- Printed - Cut
C-00257-200
Polycarbonate Body - MOXOO XP
- Printed - Cut
C-00250-062
Input Shaft - Slipper Shaft -
Steel
C-00250-069
Wheel Shaft - Rear - Steel -
2 Pcs
C-00250-075
Diff Gear Set - Metal -
1 Set
C-00250-089
Slipper Clutch Plate - Aluminum
- 2 pcs
C-54050
Electric Motor - KURON 605 -
4-Pole - 3500 KV - Brushless
Use only the TOROX 60 ESC
Not compatible with TRITON chassis Not compatible with TRITON chassis Not compatible with TRITON chassis Not compatible with TRITON chassis
Not compatible with MOXOO and
MAMMOTH chassis
Not compatible with MOXOO and
MAMMOTH chassis
Use only the CORA 40 ESC Use with the KURON 605 Brushless
Motor
Use with the 550 Type Brushed
Motor
VARIOPROP - CR-7209-MG
C-00251-200
Polycarbonate Body - TRITON XP
- Printed - Cut
C-00250-099
Screw Set
C-00250-063
Drive Gear 13T - Metal
C-00250-070
Drive Shaft - Rear - Steel -
2 Pcs
C-00250-078
Wheel Hex Adapter - Rear -
Aluminum - 2 pcs
C-00250-090
Slipper Clutch Spring - 1 Set
C-71514
Motor Pinion - Hardened Steel -
13T / 32DP
C-52020
Digital Servo - Low Voltage - Core
Motor - Metal Gear – 9 Kg Torque
C-00254-200
Polycarbonate Body -
MAMMOTH SP - Printed - Cut

14
NOTE
DECLARATION OF CONFORMITY
EU-Konformitätserklärung/ Déclaration de Conformité UE
(in accordance with ISO/IEC 17050-1) / (in Übereinstimmung mit ISO/IEC 17050-1) /
(Conformément à la norme ISO/IEC 17050-1)
Description : 1/10 Monter Truck 2WD - RTR
Item Number: C-00250, C-00251, C-00252, C-00253, C-00254, C-00255, C-00256, C-00257
This declaration is issued under the sole responsibility of the manufacturer.
Die alleinige Verantwortung für die Ausstellung dieser Erklärung trägt der Hersteller.
La présente déclaration est établie sous la seule responsabilité du fabricant.
Product(s)/Produkt(e)/ Produit(s) : 1/10 Monter Truck 2WD - RTR
The object of declaration described above is in conformity with the relevant Union harmonization Legislation, specifically the
requirements of the specifications listed below, following the provisions of the European RED Directive 2014/53/EU:
Der Gegenstand dieser Erklärung ist konform mit den Harmonisierungsrechtsvorschriften der Europäischen Union, insbesondere
mit den unten aufgeführten Bestimmungen, und folgt der europäischen RED Direktive 2014/53/EU:
L’objet de la déclaration décrit ci-dessus est conforme à la législation pertinente en matière d’harmonisation de l’Union eu-
ropéenne, en particulier les exigences des spécifications énumérées ci-dessous, conformément aux dispositions des directives
européennes RED 2014/53/EU:
EN 300 440 V2.1.1:2017 EN 301 489-3 V1.6.1:2013
EN 301 489-1 V2.1.1:2017 EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013
EN 62479:2010 EN 55024:2010+A1:2015
EN 55032:2015 EN 61000-3-3:2013
EN 61000-3-2:2014
JSP GROUP INTL • Geelseweg, 80 • 2250 Olen • Belgium
Signed for and on behalf of/ Unterzeichnet für und im Namen von/ Signé pour et au nom de :
Place/Ort/Lieu and Date/Datum/Data : Olen, Belgium, 29 Mai 2019
Name/Nom: Stefan Engelen Signature/Unterschrift :
Title/Titel/Titre : Ceo

15
NOTE
This manual is an edition of Team Corally / JSP Group Intl bvba, Geelseweg 80, B-2250 OLEN (Belgium). This manual is protected by a copyright and nothing from this edition may be reproduced or used without any prior written authorization. Whilst every effort has been
made to ensure the accuracy of the information in this manual, errors do creep in and Team Corally / JSP Group Intl bvba can accept no responsibility for failures, wrong specifications, accuracy of colors, losses or damages caused. Team Corally / JSP Group Intl bvba
denies any responsibility claims or damages caused by use of our products. Team Corally / JSP Group Intl bvba is not responsible for product changes. The products of dangerous nature show in this manual are submissive to special handling and storage specifications.
Please read the instruction of the manufacturer and check with your local authorities for existing legislation.
All rights reserved.
© 2019 Copyright Team Corally / JSP Group Intl bvba

WWW.CORALLY.COM
Team Corally is a registered trademark licensed to
JSP Group Intl bvba • Geelseweg 80 • B-2250 OLEN • Belgium
Tel: +32 14 25 92 94 • info@corally.com
This manual suits for next models
8
Table of contents
Other Corally Toy manuals
Popular Toy manuals by other brands

Xray
Xray XB4 instruction manual

PIKO
PIKO BLAUER BLITZ Rh 5045 Instructions for use

Mega Construx
Mega Construx DESTINY manual

Eduard
Eduard Pz. Kpfw. IV Ausf. H quick start guide

Mega Construx
Mega Construx Despicable Me Snowy Soccer DYD31 Assembly instructions

MS Composit
MS Composit SWIFT instruction manual

Fisher-Price
Fisher-Price GJD44 quick start guide

Shenzhen Lanxiang Model Aircraft
Shenzhen Lanxiang Model Aircraft A-10 instruction manual

Smoby
Smoby COTOONS TROTT COTOONS manual

Fisher-Price
Fisher-Price W9913 manual

REVELL
REVELL Junkers Ju 290 A-7 "Spy Version" Assembly manual

Faller
Faller 144107 quick start guide